Vulnerability · Published Sep 16, 2026 · Assigned by cisco
CVE-2026-20120Cisco FTD ACL bypass vulnerability
Medium 5.8
In plain English
A medium-severity improper access control in Cisco Secure Firewall Adaptive Security Appliance (ASA) Software from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities).
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | 9.23.19.22.1.19.22.1.39.22.1.29.22.1.69.22.29.23.1.39.22.2.4 |
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | 7.6.07.7.07.6.17.6.27.7.107.7.117.6.2.17.7.10.1 |
Weakness: CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N