Cisco patches high-severity SSL VPN DoS flaw in ASA and FTD software
Cisco disclosed CVE-2026-20349, a high-severity vulnerability in the Remote Access SSL VPN service of Cisco Secure Firewall ASA and FTD Software. Insufficient error checking when processing HTTP requests lets an unauthenticated, remote attacker send a crafted request that reloads the device, causing denial of service. Cisco released software updates; no workarounds exist.
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