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CVE-2026-20316

CRITICAL Export PDF

Cisco Secure Firewall Management Center (FMC) Vulnerability

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.

CVSS Score
9.8
CRITICAL
Published
29 Jul 2026 00:00
Modified
N/A
Vendor
Cisco
Product
Secure Firewall Management Center (FMC)
Source
CIRCL

Affected Versions

Fix Vendor Patch / Mitigation Available

Weaknesses (CWE)

CWE-259

Affected Systems

Cisco
Secure Firewall Management Center (FMC)
Cisco
Secure Firewall Adaptive Security Appliance (ASA) And Secure Firewall Threat Defense (FTD)
Secure Firewall Management Center (FMC)
IOS
Unified Communications Manager
Catalyst SD-WAN Manager
Catalyst SD-WAN
Catalyst SD-WAN Manger

KEV Status

Known Exploited Vulnerability