INCIDENT EVIDENCE GRAPH

Cisco warns of FMC static credential flaw exploited in zero-day attacks

2026-07-29T00:00:00Z

Cisco is warning that a high-severity Secure Firewall Management Center (FMC) static credential vulnerability, tracked as CVE-2026-20316, was actively exploited in zero-day attacks to gain unauthorized access to vulnerable devices. [...]

• Victim: Vulnerable Secure Firewall Management Center (FMC) devices
• Exploit: CVE-2026-20316
• Method: Active exploitation of a high-severity static credential vulnerability to gain unauthorized access

Primary evidence

1. Cisco Secure FMC Zero-Day Exploited in the Wild
2. Cisco warns of FMC static credential flaw exploited in zero-day attacks
3. CVE-2026-20316: Cisco Secure Firewall Management Center Use of Hard-coded Password Vulnerability

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