Description

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.

INFO

Published Date :

2025-09-24T16:40:27.448Z

Last Modified :

2025-09-24T17:04:25.755Z

Source :

cisco
AFFECTED PRODUCTS

The following products are affected by CVE-2025-20339 vulnerability.

Vendors Products
Cisco
  • Sd-wan Vedge Cloud
  • Sd-wan Vedge Router
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-20339.

URL Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-defaultacl-pSJk9nVF cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact