VulnerabilityBleeping Computer
10.0 — CRITICAL
Cisco warns of FMC static credential flaw exploited in zero-day attacks
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. [...]
🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview
A high-severity vulnerability in Cisco Secure FMC Software was actively exploited in zero-day attacks, allowing unauthorized access to vulnerable devices. The vulnerability has a CVSS score of 5.3 and is considered High severity.
⚙️Technical Details
CVEs
CVE-2026-20316CVE-2026-20079Affected Systems: Cisco Secure FMC SoftwareAttack Vectors: NETWORK
Affected Systems
Cisco Secure FMC Software
Attack Vectors
NETWORK
💥Impact Assessment
Severity: High
🛡️Recommended Actions
1Install available hot fixes for affected Secure FMC releases
2Rotate all user credentials, keys, and certificates on affected FMC devices
3Review /var/log/messages log file for signs of vulnerability exploitation
📦Affected Products
Cisco Secure Firewall Management CenterCisco Secure Firewall Management Center Software
🔐NVD Verified DataVERIFIED
CVE-2026-20316 ↗CVSS 5.3 — MEDIUM
Attack Vector
NETWORK
Complexity
LOW
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NWeaknesses
CWE-259
Affected Products (CPE)
Cisco Secure Firewall Management Center
CVE-2026-20079 ↗CVSS 10 — CRITICAL
Attack Vector
NETWORK
Complexity
LOW
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HWeaknesses
CWE-288
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