Riskcovery

CVE-2025-20316

State
Published
Severity
5.3 Medium
Published
Sep 24, 2025
Updated
Sep 24, 2025
Reserved
Oct 10, 2024

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
3.15.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Ncisco

Weaknesses

Affected Products

ProductVersions
Cisco IOS XE SoftwareCisco
  • 17.7.1Affected
  • 17.10.1Affected
  • 17.10.1bAffected
  • 17.8.1Affected
  • 17.9.1Affected
  • 17.9.2Affected
  • 17.9.3Affected
  • 17.9.4Affected
  • 17.9.5Affected
  • 17.9.4aAffected
  • 17.9.6Affected
  • 17.9.6aAffected
  • 17.9.7Affected
  • 17.11.1Affected
  • 17.12.1Affected
  • 17.12.2Affected
  • 17.12.3Affected
  • 17.12.4Affected
  • 17.12.5Affected
  • 17.13.1Affected
  • 17.14.1Affected
  • 17.15.1Affected
  • 17.15.2Affected
  • 17.15.3Affected
  • 17.15.2bAffected
  • and 2 more versions

References

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