5.8
Medium
CVE-2026-20073 A vulnerability in Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat…
Description
A vulnerability in Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to send traffic that should be denied through an affected device. This vulnerability is due to improper error handling when an affected device that is joining a cluster runs out of memory while replicating access control rules. 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 and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.23 | 9.23.1 → 9.23.1.19 | No fix stated |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.22 | 9.22.1.1 → 9.22.2.13 | No fix stated |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.20 | 9.20.1 → 9.20.4.10 | No fix stated |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.19 | 9.19.1 → 9.19.1.42 | No fix stated |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.18 | 9.18.1 → 9.18.4.68 | No fix stated |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.17 | 9.17.1 → 9.17.1.46 | No fix stated |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.16 | 9.16.1 → 9.16.4.84 | No fix stated |
| Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.12 | 9.12.1 → 9.12.4.67 | No fix stated |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.7 | 7.7.0 → 7.7.10.1 | No fix stated |
Show the 7 other branches Hide the 7 other branches
| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco Secure Firewall Threat Defense (FTD) Software 7.6 | 7.6.0 → 7.6.2.1 | No fix stated |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.4 | 7.4.0 → 7.4.2.4 | No fix stated |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.3 | 7.3.0 → 7.3.1.2 | No fix stated |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.2 | 7.2.0 → 7.2.10.2 | No fix stated |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.1 | 7.1.0 → 7.1.0.3 | No fix stated |
| Cisco Secure Firewall Threat Defense (FTD) Software 7.0 | 7.0.0 → 7.0.8.1 | No fix stated |
| Cisco Secure Firewall Threat Defense (FTD) Software 6.4 | 6.4.0 → 6.4.0.18 | No fix stated |
References
- cisco-sa-asaftd-aclbypass-dos-CVxVRSvQ sec.cloudapps.cisco.com
Timeline
- Published
- Last modified
Other CVEs of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software
The 48 CVEs of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software →
CVE-2026-76418
Cisco Secure Firewall ASA Software and Cisco Secure FTD Software Unchecked Return Value to NULL Pointer Dereference Vulnerability
8.6
High
CVE-2026-20121
A vulnerability in the access control list (ACL) Object Group Search (OGS) implementation of Cisco Secure Firewall…
5.3
Medium
CVE-2026-20120
A vulnerability in the access control list (ACL) Object Group Search (OGS) implementation of Cisco Secure Firewall…
5.8
Medium
CVE-2026-20248
A vulnerability in the DNS over TCP implementation of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software…
6.8
Medium