What’s Vulnerable › Vulnerabilities
CVE-2025-20339: Cisco SD-WAN vEdge Software Access Control List Bypass Vulnerability
- Severity: medium (CVSS 5.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-09-24 · updated 2026-09-26
- Weakness: CWE-284
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.
Affected products
- Cisco SD-WAN vEdge Cloud: 20.9.1, 20.9.1.1, 20.9.2, 20.9.3, 20.9.3.1, 20.9.2.2 (+6)
- Cisco SD-WAN vEdge router: 20.3.1, 20.3.2, 20.4.1, 20.4.1.1, 20.3.3, 20.4.1.2 (+26)
References
Get alerted when CVE-2025-20339 or the next vulnerability affects your stack