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// CVE · PUBLISHED 2026-08-11

CVE-2026-20349

Cisco / Cisco Secure Firewall Adaptive Security Appliance (ASA) Software · Cisco / Cisco Secure Firewall Threat Defense (FTD) Software

8.6 · CVSS 3.1HighCISA KEV

CISA lists this CVE as exploited in the wild. Patch it before anything rated by score alone.

Description

A vulnerability in the Remote Access SSL VPN service for Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition.  This vulnerability is due to insufficient error checking when processing HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to the Remote Access SSL VPN service on an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

References

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This product uses the NVD API but is not endorsed or certified by the NVD. CVSS scores do not establish exploitation.