Cisco Patches 18 Critical and High-Severity Firewall Vulnerabilities, One Actively Exploited

Summary

Cisco released a massive security hardening update fixing 18 vulnerabilities in its Secure Firewall suite, including an actively exploited authentication bypass (CVE-2026-20332) and multiple critical remote code execution flaws.

Take Action:

If you use Cisco Secure Firewall (ASA, FTD, or FMC), this is urgent. Patch now to the fixed versions Cisco lists. At least one flaw is already being exploited by attackers. Make sure the management interfaces are reachable only from your trusted internal network and never from the internet.

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This article was originally published on BeyondMachines