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OpenAdvisories
Medium · 5.3 CVE-2026-20121 EUVD-2026-81017GHSA-9j5c-2gxv-8m6x

CIsco FTD Bypass Access List

Published Sep 16, 2026 · Updated Sep 18, 2026 · Assigned by cisco

Description

A vulnerability in the access control list (ACL) Object Group Search (OGS) implementation of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass configured access controls.

This vulnerability is due to a logic error in populating group access control policies (ACPs) with OGS configured. An attacker could exploit this vulnerability by sending traffic that should be blocked through the device. A successful exploit could allow the attacker to bypass access controls and reach devices in protected networks.

Affected products

VendorProductAffectedFixed
Cisco Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.23.1, 9.22.1.1, 9.22.1.3, 9.22.1.2, 9.22.1.6, 9.22.2, 9.23.1.3, 9.22.2.4, 9.23.1.7, 9.22.2.9, 9.23.1.13, 9.22.2.13, 9.23.1.19, 9.22.2.14, 9.23.1.22, 9.22.2.20 —
Cisco Cisco Secure Firewall Threat Defense (FTD) Software 7.6.0, 7.7.0, 7.6.1, 7.6.2, 7.7.10, 7.7.11, 7.6.2.1, 7.7.10.1 —

Advisories 1

References