CVE-2026-20316

Cisco Secure Firewall Management Center Actively Exploited (CISA KEV)CVSS 5.3KEV0-Day

Actively exploited (CISA KEV) - patch before 2026-08-01

Cisco Secure Firewall Management Center (FMC) formerly known as Firepower Management Center contains a use of hard-coded password vulnerability that could allow an unauthenticated, remote attacker to log in to an affected device using a low-privileged account to access sensitive data within the impacted systems.

Actively exploited in the wild and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. No distribution fix is listed yet; apply vendor mitigations and monitor.

Recommended action: No fix is published yet for an actively-exploited flaw. Apply vendor mitigations, restrict exposure, and watch for a patch.

CVE-2026-20316 Cisco Secure Firewall Management Center Actively Exploited (CISA KEV)

Severity metrics

CVSS 3.1 : 5.3 MEDIUM

Attack vectorNetwork (remote)

Attack complexityLow

Privileges requiredNone

User interactionNone

ScopeUnchanged

Confidentiality impactLow

Integrity impactNone

Availability impactNone

Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected & fixed versions by distribution

Versions are the native distribution strings (backport-aware): RHEL/Debian/SUSE backport fixes, so compare with the distro version comparator (dpkg / rpm / vercmp), not the upstream version.

No affected package in the tracked watchlist yet (Debian, Ubuntu, Arch, SUSE, Red Hat...). Triage may still be pending.

Sources

Advisory NVD CVE.org

Published 2026-07-29 · source: CISA Known Exploited Vulnerabilities