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

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• NewsExploited · CISA KEVKnown ransomware useCisco · Secure Firewall Management Center (FMC)

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

  CVE-2026-20316

  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.

  CISA's required action · due 1 Aug 2026 for U.S. federal civilian agencies

  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.

  Cited by CISA: sec.cloudapps.cisco.com · nvd.nist.gov

  Added to KEV 29 Jul 2026 · Source checked 4 Nov 2026, 16:30 UTC · CISA KEV entry

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