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Cisco ASA and FTD Flaw Exploited in the Wild Can Trigger Remote DoS

·Source: The Hacker News

Updated:

Executive Summary

Cisco has warned that a new vulnerability impacting Secure Firewall Adaptive Security Appliance (ASA) Software and Secure Firewall Threat Defense (FTD) Software has been exploited in the wild. The high-severity flaw, tracked as CVE-2026-20349 (CVSS score: 8.6), is a case of insufficient error checking when processing HTTP requests that could allow an unauthenticated, remote attacker to trigger

Analysis

Cisco has warned that a new vulnerability impacting Secure Firewall Adaptive Security Appliance (ASA) Software and Secure Firewall Threat Defense (FTD) Software has been exploited in the wild. The high-severity flaw, tracked as CVE-2026-20349 (CVSS score: 8.6), is a case of insufficient error checking when processing HTTP requests that could allow an unauthenticated, remote attacker to trigger

Indicators of Compromise (1)

CVE (1)
CVE-2026-20349
NVDMITRE CVE
Source Attribution

Originally published by The Hacker News on Aug 12, 2026.

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