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.
History

Thu, 25 Sep 2025 08:30:00 +0000

Type Values Removed Values Added
First Time appeared Cisco
Cisco sd-wan Vedge Cloud
Cisco sd-wan Vedge Router
Vendors & Products Cisco
Cisco sd-wan Vedge Cloud
Cisco sd-wan Vedge Router

Wed, 24 Sep 2025 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 24 Sep 2025 17:00:00 +0000

Type Values Removed Values Added
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.
Title Cisco SD-WAN vEdge Software Access Control List Bypass Vulnerability
Weaknesses CWE-284
References
Metrics cvssV3_1

{'score': 5.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2025-09-24T16:40:27.448Z

Updated: 2025-09-24T17:04:25.755Z

Reserved: 2024-10-10T19:15:13.255Z

Link: CVE-2025-20339

cve-icon Vulnrichment

Updated: 2025-09-24T17:04:18.177Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-09-24T17:15:40.523

Modified: 2025-09-24T18:11:24.520

Link: CVE-2025-20339

cve-icon Redhat

No data.