CVE-2021-1394

mediumPriorität · verfolgen · 21EPSS 0.013 · 71. PerzentilEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.32% (71st) EPSS

CVSS 4.3 · medium

Is it mine?

23 products

Prüfe deine Angriffsfläche

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cisco_csaf

EPSS · bewertet 2026-10-27

A vulnerability in the ingress traffic manager of Cisco IOS XE Software for Cisco Network Convergence System (NCS) 520 Routers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition in the web management interface of an affected device. This vulnerability is due to incorrect processing of certain IPv4 TCP traffic that is destined to an affected device. An attacker could exploit this vulnerability by sending a large number of crafted TCP packets to the affected device. A successful exploit could allow the attacker to cause the web management interface to become unavailable, resulting in a DoS condition. Note: This vulnerability does not impact traffic that is going through the device or going to the Management Ethernet interface of the device.

Behebungen

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

Ein Hersteller-Fix ist verfügbar.

Behoben16.10.1cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Behoben16.10.1acisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Behoben16.10.1bcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Behoben16.10.1ccisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Behoben16.10.1dcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Behoben16.10.1ecisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Behoben16.10.1fcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Behoben16.10.1gcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Behoben16.10.1scisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
Behoben17.11.99SWcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com

cvss

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

5.3

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USAusnutzbarkeit 8.6 · Auswirkung 2.9

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lprimary · NVD / NIST USAusnutzbarkeit 3.9 · Auswirkung 1.4

v3.15.3mediumAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · FSTEC (BDU) RU

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · ENISA EU

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · psirt@cisco.com USAusnutzbarkeit 3.9 · Auswirkung 1.4

v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:Usecondary · CVSS-BT (t0sche)

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · Cisco PSIRT US

SSVC

Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-399USCWE-399US

betroffene Produkte (23)

Betroffene Produkte und Versionsbereiche.

Cisco 16.10.1alle Versionencisco_csafUS
Cisco 16.10.1aalle Versionencisco_csafUS
Cisco 16.10.1balle Versionencisco_csafUS
Cisco 16.10.1calle Versionencisco_csafUS
Cisco 16.10.1dalle Versionencisco_csafUS
Cisco 16.10.1ealle Versionencisco_csafUS
Cisco 16.10.1falle Versionencisco_csafUS
Cisco 16.10.1galle Versionencisco_csafUS
Cisco 16.10.1salle Versionencisco_csafUS
Cisco 17.11.99SWalle Versionencisco_csafUS
Cisco Cisco IOS XE Software≤ n/aenisa_euvdEU
Cisco Systems Inc. Cisco IOS XE≤ 17.2fstec_bduRU
Cisco Systems Inc. Cisco IOS XE≤ 16.1fstec_bduRU
cisco ios xe= 16.10.1nvdUScpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
cisco ios xe= 16.10.1anvdUScpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
cisco ios xe= 16.10.1bnvdUScpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
cisco ios xe= 16.10.1cnvdUScpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
cisco ios xe= 16.10.1dnvdUScpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
cisco ios xe= 16.10.1envdUScpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
cisco ios xe= 16.10.1fnvdUScpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*

20 von 23 angezeigt

Advisories (1)

Hersteller- und Ökosystem-Meldungen dazu.

cisco-sa-ncs520-tcp-ZpzzOxBCisco IOS XE Software for Network Convergence System 520 Routers Denial of Service Vulnerability2021-03-24csaf · cisco_csafUS
A vulnerability in the ingress traffic manager of Cisco IOS XE Software for Cisco Network Convergence System (NCS) 520 Routers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition in the web management interface of an affected device. This vulnerability is due to incorrect processing of certain IPv4 TCP traffic that is destined to an affected device. An attacker could exploit this vulnerability by sending a large number of crafted TCP packets to the affected device. A successful exploit could allow the attacker to cause the web management interface to become unavailable, resulting in a DoS condition. Note: This vulnerability does not impact traffic that is going through the device or going to the Management Ethernet interface of the device. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

auch bekannt als (4)

Weitere Namen und Kennungen dieser Entität.

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvd enisa_euvd fstec_bdu cisco_csaf nvd NVD CVE.org MITRE

veröffentlicht 2021-03-24geändert 2026-06-17

Referenzen (5)

Externe Belege — Patches, Meldungen, Analysen.

scry

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