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CVE-2026-20316

Cisco Secure Firewall Management Center Software Static Credential Vulnerability

  • Medium 5.3
  • Exploited: added to CISA KEV 29 Jul 2026
  • Used in ransomware campaigns

Description

A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software 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. This vulnerability is due to the presence of static user credentials for a low-privileged account. An attacker could exploit this vulnerability by using the account to log in to an affected system. A successful exploit could allow the attacker to log in to the affected system and access sensitive data as the low-privileged user.  Note: If the FMC management interface does not have public internet access, the attack surface that is associated with this vulnerability is reduced.   Cisco has assigned this security advisory a Security Impact Rating (SIR) of High rather than Medium as the score indicates. The reason is that this vulnerability can be used with other Cisco Secure FMC Software vulnerabilities to elevate privileges.

Key facts

Published
29 Jul 2026
Last changed
16 Sep 2026
Assigned by
cisco
KEV added
29 Jul 2026
KEV fix due
1 Aug 2026
Used in ransomware
Yes, according to CISA
EPSS
35.096% likely to be exploited in the next 30 days, higher than 98.464% of CVEs (scores for 15 Nov 2026)
SSVC (CISA)
Exploitation: active; Automatable: yes; Technical impact: partial

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 5.3CVSS 3.1, Mediumfrom the CNA (cisco)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

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.CISA KEV required action

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
CiscoCisco Secure Firewall Management Center (FMC)
  • Default status: unknown
  • 7.0.0 (affected)
  • 7.0.0.1 (affected)
  • 7.0.1 (affected)
  • 7.0.1.1 (affected)
  • 7.0.2 (affected)
  • 7.2.0 (affected)
  • 7.0.2.1 (affected)
  • 7.0.3 (affected)
  • 7.2.0.1 (affected)
  • 7.0.4 (affected)
  • 7.2.1 (affected)
  • 7.0.5 (affected)
  • 7.3.0 (affected)
  • 7.2.2 (affected)
  • 7.3.1 (affected)
  • 7.2.3 (affected)
  • 7.2.3.1 (affected)
  • 7.2.4 (affected)
  • 7.0.6 (affected)
  • 7.2.4.1 (affected)
  • 7.2.5 (affected)
  • 7.3.1.1 (affected)
  • 7.4.0 (affected)
  • 7.0.6.1 (affected)
  • 7.2.5.1 (affected)
  • 7.4.1 (affected)
  • 7.2.6 (affected)
  • 7.4.1.1 (affected)
  • 7.0.6.2 (affected)
  • 7.2.7 (affected)
  • 7.2.5.2 (affected)
  • 7.3.1.2 (affected)
  • 7.2.8 (affected)
  • 7.6.0 (affected)
  • 7.4.2 (affected)
  • 7.2.8.1 (affected)
  • 7.0.6.3 (affected)
  • 7.4.2.1 (affected)
  • 7.2.9 (affected)
  • 7.0.7 (affected)
  • 7.7.0 (affected)
  • 7.4.2.2 (affected)
  • 7.2.10 (affected)
  • 7.6.1 (affected)
  • 7.4.2.3 (affected)
  • 7.0.8 (affected)
  • 7.6.2 (affected)
  • 7.7.10 (affected)
  • 7.2.10.1 (affected)
  • 7.0.8.1 (affected)
  • 7.6.2.1 (affected)
  • 7.2.10.2 (affected)
  • 7.7.10.1 (affected)
  • 7.4.2.4 (affected)
  • 7.4.3 (affected)
  • 7.6.3 (affected)
  • 7.7.11 (affected)
  • 7.6.4 (affected)
  • 10.0.0 (affected)
  • 7.4.4 (affected)
  • 7.4.5 (affected)
  • 7.0.9 (affected)
  • 7.2.11 (affected)
  • 7.7.12 (affected)
  • 7.6.5 (affected)
  • 7.4.6 (affected)
  • 10.0.1 (affected)
  • 7.4.7 (affected)

Timeline

  1. 29 Jul 2026 Added to the CISA KEV catalogue
  2. 29 Jul 2026 Published

Weakness

References