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CVE-2025-20339

Cisco SD-WAN vEdge Software Access Control List Bypass Vulnerability

CVSS 5.8 MEDIUMEPSS 0.3%CWE-284
Vexday Risk Score
13Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 5.8EPSS 0.3%KEV nãoPoC Nuclei Metasploit Patch
Lifecycle
24 Sep 2025Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
A vulnerability in the access control list (ACL) processing of IPv4 packets of Cisco SD-WAN vEdge Software could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to the improper enforcement of the implicit deny all at the end of a configured ACL. An attacker could exploit this vulnerability by attempting to send unauthorized traffic to an interface on an affected device. A successful exploit could allow the attacker to bypass an ACL on the affected device.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N