CVE-2026-20073

score

<0.1

cvss

5.8

epss

0.4%

published

2026-03-04

kev added

—

first seen

2026-10-21

Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software contain an access control bypass caused by improper error handling during cluster memory exhaustion, letting unauthenticated remote attackers bypass access controls, exploit requires sending traffic that triggers memory exhaustion during rule replication.