CVE-2026-20073
Published: Mar 4, 2026
Modified: Mar 4, 2026
CVSS v3.1
5.8
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.
| Vendor | Product | Versions |
|---|---|---|
Cisco | Cisco Secure Firewall Adaptive Security Appliance (ASA) Software | affected 9.12.3affected 9.12.1affected 9.12.2affected 9.12.4affected 9.12.3.2+154 more versions |
Cisco | Cisco Secure Firewall Threat Defense (FTD) Software | affected 6.4.0.1affected 6.4.0.2affected 6.4.0.5affected 6.4.0affected 6.4.0.3+70 more versions |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
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