CVE-2025-20316
mediumPriorität · verfolgen · 0EPSS 0.003 · 27. PerzentilDEEUNLRUUSEPSS · bewertet 2026-10-27
A vulnerability in the access control list (ACL) programming of Cisco IOS XE Software for Cisco Catalyst 9500X and 9600X Series Switches could allow an unauthenticated, remote attacker to bypass a configured ACL on an affected device. This vulnerability is due to the flooding of traffic from an unlearned MAC address on a switch virtual interface (SVI) that has an egress ACL applied. An attacker could exploit this vulnerability by causing the VLAN to flush its MAC address table. This condition can also occur if the MAC address table is full. A successful exploit could allow the attacker to bypass an egress ACL on an affected device.
Behebungen
Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.
Ein Hersteller-Fix ist verfügbar.
- Behoben17.10.1cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.10.1bcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.11.1cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.12.1cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.12.2cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.12.3cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.12.4cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.12.5cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.13.1cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.14.1cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.15.1cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.15.2cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.15.2bcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.15.3cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.16.1cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.17.1cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.18.0EFTcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.7.1cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.8.1cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.9.1cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.9.2cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.9.3cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.9.4cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.9.4acisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.9.5cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.9.6cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.9.6acisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.9.6bcisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - Behoben17.9.7cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com
cvss
Technischer Schweregrad, 0–10. Eine Zeile je Quelle.
Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen
SSVC
Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.
schwächen
Die CWE-Schwächeklassen, zu denen dies gehört.
betroffene Produkte (66)
Betroffene Produkte und Versionsbereiche.
- Cisco IOS XE Catalyst 9500X and 9600X Switchesalle Versionencert_bundDEcpe:/o:cisco:ios_xe:catalyst_9500x_and_9600x_switches
Advisories (3)
Hersteller- und Ökosystem-Meldungen dazu.
- NCSC-2025-0297Kwetsbaarheden verholpen in Cisco IOS en Cisco IOS XE SoftwareNL2025-09-25csaf · ncsc_nlNL
Cisco heeft kwetsbaarheden verholpen in Cisco IOS en Cisco IOS XE Software.
- WID-SEC-W-2025-2128Cisco IOS XE: Mehrere SchwachstellenDeutsch2025-09-24csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Cisco IOS XE ausnutzen, um Informationen offenzulegen, einen Denial-of-Service-Zustand zu verursachen und Sicherheitsmaßnahmen zu umgehen.
- cisco-sa-cat9k-acl-L4K7VXgDCisco IOS XE Software on Cisco Catalyst 9500X and 9600X Series Switches Virtual Interface Access Control List Bypass Vulnerability2025-09-24csaf · cisco_csafUS
A vulnerability in the access control list (ACL) programming of Cisco IOS XE Software for Cisco Catalyst 9500X and 9600X Series Switches could allow an unauthenticated, remote attacker to bypass a configured ACL on an affected device. This vulnerability is due to the flooding of traffic from an unlearned MAC address on a switch virtual interface (SVI) that has an egress ACL applied. An attacker could exploit this vulnerability by causing the VLAN to flush its MAC address table. This condition can also occur if the MAC address table is full. A successful exploit could allow the attacker to bypass an egress ACL on an affected device. Cisco has released software updates that address this vulnerability. There are workarounds that address this vulnerability. This advisory is part of the September 2025 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: September 2025 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication ["https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-75296"].
auch bekannt als (5)
Weitere Namen und Kennungen dieser Entität.
quellen
Welche Quellen diesen Datensatz belegen und wann.
Referenzen (4)
Externe Belege — Patches, Meldungen, Analysen.
- https://access.redhat.com/security/cve/cve-2025-20316cnnvd
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cat9k-acl-L4K7VXgDcnnvd
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cat9k-acl-L4K7VXgDenisa_euvd
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cat9k-acl-L4K7VXgDnvd
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