ShellCodeX
Tools • Events • News • Insights
ShellCodeX Intelligence Brief
HIGH Vulnerabilities

CISA adds Cisco Secure Firewall FMC CVE-2026-20316 to KEV amid active use

Source headline: Cisco FMC Zero-Day Actively Exploited, Static Credentials Could Expose Sensitive Data

Threat level High
Signal strength 80/100
Source confidence 1 source
Published 3 hours ago

Intelligence Summary

CISA added a newly disclosed Cisco Secure Firewall Management Center (FMC) vulnerability to its KEV catalog. The flaw, CVE-2026-20316, is reported to be actively exploited in the wild. The issue can allow an unauthenticated remote attacker to access the system using static credentials. This raises the risk of unauthorized access and exposure of sensitive management data. Organizations using affected FMC deployments should review exposure, apply mitigations, and validate whether patching is required.

Recommended Action

Review affected assets, schedule urgent remediation, and monitor related indicators.

Topics

#kev #cisco #active-exploitation #cve-2026-20316 #firewall-management #static-credentials
Original reporting The Hacker News Cisco FMC Zero-Day Actively Exploited, Static Credentials Could Expose Sensitive Data
Open original source

Related Pulse Signals

View all signals
High · Vulnerabilities Chrome 151 rollout fixes 370 security issues across critical code paths Critical · Vulnerabilities Cisco Secure FMC CVE-2026-20316 Zero-Day Used for Unauthenticated Logins Critical · Vulnerabilities CVE-2026-20316: Cisco warns about FMC static credential zero-day use Critical · Vulnerabilities Rails Active Storage file disclosure risk via crafted image uploads (CVE-2026-66066)