CVE-2025-20339
Cisco SD-WAN vEdge Software Access Control List Bypass Vulnerability
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.
Weakness: CWE-284
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco SD-WAN vEdge | Routing & Switching | cna-assigner |
Vendor-reported products (2)
- Cisco · Cisco SD-WAN vEdge Cloud
- Cisco · Cisco SD-WAN vEdge Router
Vendor advisory
Cisco SD-WAN vEdge Software Access Control List Bypass Vulnerability
Cisco’s rating: Medium (advisory CVSS 5.8) · Published Sep 24, 2025
Bug ID: CSCwo83136
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from