CVE-2026-20316CiscoFirewall and VPNJuly 29, 2026

Cisco Secure Firewall Management Center Use of Hard-coded Password Vulnerability

Medium 5.3Actively exploitedUsed by ransomware

Description

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.

What to do

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

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Details

Vendor
Cisco
Product
Cisco Secure Firewall Management Center (FMC)
CVE
CVE-2026-20316
Affected versions
Cisco Secure Firewall Management Center (FMC) 7.0: 17 versions, from 7.0.0 to 7.0.9
Cisco Secure Firewall Management Center (FMC) 7.2: 20 versions, from 7.2.0 to 7.2.11
Cisco Secure Firewall Management Center (FMC) 7.3: 4 versions, from 7.3.0 to 7.3.1.2
Cisco Secure Firewall Management Center (FMC) 7.4: 13 versions, from 7.4.0 to 7.4.7
Cisco Secure Firewall Management Center (FMC) 7.6: 7 versions, from 7.6.0 to 7.6.5
Cisco Secure Firewall Management Center (FMC) 7.7: 5 versions, from 7.7.0 to 7.7.12
Cisco Secure Firewall Management Center (FMC) 10.0: 10.0.0; 10.0.1 (from the advisory and NVD; check the exact builds in the official advisory)
CVSS score
5.3
Actively exploited
Yes, listed in the CISA Known Exploited Vulnerabilities catalog
CISA due date
August 1, 2026 (deadline for US federal agencies: a good benchmark for you too)
Source
CISA KEV – original advisory
Published
July 29, 2026

The description and the recommended action are quoted from the public advisory; severity, exploitation status and affected versions are compiled automatically from public sources and may contain errors. The vendor's original advisory prevails: check it before taking action. This information is provided without warranty and does not replace a professional assessment.

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