CVE-2021-1368

mediumPriorität · verfolgen · 35EPSS 0.005 · 39. PerzentilEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.46% (39th) EPSS
CVSS 4.9 · medium
Is it mine?
187 products
Prüfe deine Angriffsfläche
Who says so?
4 sources
cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · bewertet 2026-10-27

A vulnerability in the Unidirectional Link Detection (UDLD) feature of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to execute arbitrary code with administrative privileges or cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending crafted Cisco UDLD protocol packets to a directly connected, affected device. A successful exploit could allow the attacker to execute arbitrary code with administrative privileges or cause the Cisco UDLD process to crash and restart multiple times, causing the affected device to reload and resulting in a DoS condition. Note: The UDLD feature is disabled by default, and the conditions to exploit this vulnerability are strict. The attacker needs full control of a directly connected device. That device must be connected over a port channel that has UDLD enabled. To trigger arbitrary code execution, both the UDLD-enabled port channel and specific system conditions must exist. In the absence of either the UDLD-enabled port channel or the system conditions, attempts to exploit this vulnerability will result in a DoS condition. It is possible, but highly unlikely, that an attacker could control the necessary conditions for exploitation. The CVSS score reflects this possibility. However, given the complexity of exploitation, Cisco has assigned a Medium Security Impact Rating (SIR) to this vulnerability.

01

Behebungen

Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.

Ein Hersteller-Fix ist verfügbar.

  • BehobenCisco Firepower Extensible Operating System (FXOS)cisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 6.0(2)A8(1) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 6.0(2)A8(10) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 6.0(2)A8(10a) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 6.0(2)A8(11) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 6.0(2)A8(11a) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 6.0(2)A8(11b) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 6.0(2)A8(2) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 6.0(2)A8(3) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 6.0(2)A8(4) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 6.0(2)A8(4a) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 6.0(2)A8(5) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 6.0(2)A8(6) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 6.0(2)A8(7) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 6.0(2)A8(7a) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 6.0(2)A8(7b) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 6.0(2)A8(8) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 6.0(2)A8(9) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)F3(1) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)F3(1) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)F3(2) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)F3(3) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)F3(3) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)F3(3a) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)F3(3a) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)F3(3c) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)F3(3c) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)F3(4) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)F3(4) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)F3(5) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)F3(5) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(1) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(1) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(1t) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(1t) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(2) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(2) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(3) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(3) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(4) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(4) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(5) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(5) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(6) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(6) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(6t) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(6t) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(7) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(7) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(8) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(8) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(8a) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(8a) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(8b) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(8b) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(8z) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(8z) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(9) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I4(9) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I5(1) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I5(1) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I5(2) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I5(2) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I5(3) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I5(3) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I5(3a) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I5(3a) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I5(3b) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I5(3b) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I6(1) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I6(1) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I6(2) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I6(2) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I7(1) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I7(1) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I7(2) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I7(2) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I7(3) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I7(3) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I7(3z) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I7(3z) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I7(4) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I7(4) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I7(5) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I7(5) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I7(5a) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I7(5a) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I7(6) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I7(6) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I7(6z) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I7(7) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I7(7) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I7(8) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I7(8) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I7(9) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I7(9) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I7(9w) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)I7(9w) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)IA7(1) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)IA7(2) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.0(3)IM7(2) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.3(0)D1(1) when installed on Cisco MDS 9000 Multilayer Directors and Fabric Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.3(0)D1(1) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.3(0)DX(1) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.3(0)DY(1) when installed on Cisco MDS 9000 Multilayer Directors and Fabric Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.3(1)D1(1) when installed on Cisco MDS 9000 Multilayer Directors and Fabric Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.3(1)D1(1) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.3(1)DY(1) when installed on Cisco MDS 9000 Multilayer Directors and Fabric Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.3(2)D1(1) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.3(2)D1(1d) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.3(2)D1(2) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.3(2)D1(3) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.3(2)D1(3a) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.3(3)D1(1) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.3(4)D1(1) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.3(5)D1(1) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 7.3(6)D1(1) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.1(1) when installed on Cisco MDS 9000 Multilayer Directors and Fabric Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.1(1) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.1(1a) when installed on Cisco MDS 9000 Multilayer Directors and Fabric Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.1(1b) when installed on Cisco MDS 9000 Multilayer Directors and Fabric Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.1(2) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.1(2a) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.2(1) when installed on Cisco MDS 9000 Multilayer Directors and Fabric Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.2(1) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.2(2) when installed on Cisco MDS 9000 Multilayer Directors and Fabric Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.2(2) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.2(3) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.2(4) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.2(5) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.2(6) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.3(1) when installed on Cisco MDS 9000 Multilayer Directors and Fabric Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.3(1) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.3(2) when installed on Cisco MDS 9000 Multilayer Directors and Fabric Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.3(2) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.4(1) when installed on Cisco MDS 9000 Multilayer Directors and Fabric Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.4(1) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.4(1a) when installed on Cisco MDS 9000 Multilayer Directors and Fabric Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.4(2) when installed on Cisco MDS 9000 Multilayer Directors and Fabric Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.4(2) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.4(2a) when installed on Cisco MDS 9000 Multilayer Directors and Fabric Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.4(2b) when installed on Cisco MDS 9000 Multilayer Directors and Fabric Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 8.4(3) when installed on Cisco Nexus 7000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 9.2(1) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 9.2(1) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 9.2(2) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 9.2(2) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 9.2(2t) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 9.2(2v) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 9.2(3) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 9.2(3) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 9.2(3y) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 9.2(3y) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 9.2(4) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 9.2(4) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 9.3(1) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 9.3(1) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 9.3(1z) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 9.3(2) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 9.3(2) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 9.3(3) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 9.3(3) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 9.3(4) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 9.3(4) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 9.3(5) when installed on Cisco Nexus 3000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 9.3(5) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco NX-OS Software 9.3(5w) when installed on Cisco Nexus 9000 Series Switchescisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
  • BehobenCisco Unified Computing System (Managed)cisco_csaf

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
02

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

8.8
010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 4.9–8.8

v2.04.9mediumAV:A/AC:M/Au:S/C:P/I:P/A:Pprimary · NVD / NIST USAusnutzbarkeit 4.4 · Auswirkung 6.4
v3.18.8highCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USAusnutzbarkeit 2.8 · Auswirkung 5.9
v3.18.8highAV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU
v3.18.8highCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU
v3.18.8highCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · psirt@cisco.com USAusnutzbarkeit 2.8 · Auswirkung 5.9
v3.18.1highCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
v3.18.8highCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · Cisco PSIRT US
03

SSVC

Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS
04

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-787USCWE-787US
05

betroffene Produkte (187)

Betroffene Produkte und Versionsbereiche.

20 von 187 angezeigt
06

Advisories (1)

Hersteller- und Ökosystem-Meldungen dazu.

  • cisco-sa-nxos-udld-rce-xetH6w35Cisco FXOS and NX-OS Software Unidirectional Link Detection Denial of Service and Arbitrary Code Execution Vulnerability2021-02-24csaf · cisco_csafUS

    A vulnerability in the Unidirectional Link Detection (UDLD) feature of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to execute arbitrary code with administrative privileges or cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending crafted Cisco UDLD protocol packets to a directly connected, affected device. A successful exploit could allow the attacker to execute arbitrary code with administrative privileges or cause the Cisco UDLD process to crash and restart multiple times, causing the affected device to reload and resulting in a DoS condition. Note: The UDLD feature is disabled by default, and the conditions to exploit this vulnerability are strict. The attacker needs full control of a directly connected device. That device must be connected over a port channel that has UDLD enabled. To trigger arbitrary code execution, both the UDLD-enabled port channel and specific system conditions must exist. In the absence of either the UDLD-enabled port channel or the system conditions, attempts to exploit this vulnerability will result in a DoS condition. It is possible, but highly unlikely, that an attacker could control the necessary conditions for exploitation. The CVSS score reflects this possibility. However, given the complexity of exploitation, Cisco has assigned a Medium Security Impact Rating (SIR) to this vulnerability. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

07

auch bekannt als (4)

Weitere Namen und Kennungen dieser Entität.

08

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvdenisa_euvdfstec_bducisco_csafNVDCVE.orgMITRE
veröffentlicht 2021-02-24geändert 2026-06-17
09

Referenzen (6)

Externe Belege — Patches, Meldungen, Analysen.

scry

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