CVE-2025-20339
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-24

Last updated on: 2025-09-24

Assigner: Cisco Systems, Inc.

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.
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Meta Information
Published
2025-09-24
Last Modified
2025-09-24
Generated
2026-06-16
AI Q&A
2025-09-24
EPSS Evaluated
2026-06-15
NVD
CVE-2025-20339
EUVD
EUVD-2025-31008
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
cisco sd-wan_vedge_software 20.9.7
cisco sd-wan_vedge_software 20.9
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-284 The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
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Executive Summary

This vulnerability exists in the access control list (ACL) processing of IPv4 packets in Cisco SD-WAN vEdge Software. It allows an unauthenticated, remote attacker to bypass a configured ACL because the implicit deny all rule at the end of the ACL is not properly enforced. An attacker can exploit this by sending unauthorized traffic to an interface on the affected device, effectively bypassing the ACL restrictions.

Impact Analysis

The vulnerability can allow an attacker to bypass ACLs on affected Cisco SD-WAN vEdge devices, potentially enabling unauthorized access or traffic through the network. This could lead to security breaches where unauthorized data or commands are sent or received, compromising network integrity and security.

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