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MediumKEVRansomware

CVE-2026-20316 — Cisco Secure Firewall Management Center Software Static Credential Vulnerability

CVE-2026-20316 · Secure Firewall Management Center (FMC) · CVSS 5.3…

In brief

Severity · CVSS
Medium5.3CVSS 3.1, Medium
EPSS
35%
CISA KEV
Known exploited, listed since 29 Jul 2026
Vendor
Cisco
Published · Modified
·
Last verified

Summary

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.

Weakness: CWE-259

Title, description and the vendor's statements are quoted from the CVE record; a vendor's advisory is summarised in Patcharo's words, with a link.

Affected and fixed versions

Per product and release branch, as the vendor's CVE record and official advisory state them. A fixed release is shown only when a document names it: the vendor's, or CERT-FR's for Check Point, with its source.

7 branches with a published fixed release · 1 branch without a precise fixed release

Cisco Secure Firewall Management Center (FMC)

Source: cisco-sa-fmc-static-cred-BET3CjhCVE-2026-20316

  1. 10.1
    Affected versions< 10.1.0
    First fixed release10.1
  2. 10.0
    Affected versions10.0, 10.0.1
    First fixed release10.0.2
  3. 7.7
    Affected versions7.7, 7.7.10, 7.7.10.1, 7.7.11
    5 releases listed7.7, 7.7.10, 7.7.10.1, 7.7.11, 7.7.12
    First fixed release7.7.13
  4. 7.6
    Affected versions7.6, 7.6.1, 7.6.2, 7.6.2.1
    7 releases listed7.6, 7.6.1, 7.6.2, 7.6.2.1, 7.6.3, 7.6.4, 7.6.5
    First fixed release7.6.6
  5. 7.4
    Affected versions7.4, 7.4.1, 7.4.1.1, 7.4.2
    13 releases listed7.4, 7.4.1, 7.4.1.1, 7.4.2, 7.4.2.1, 7.4.2.2, 7.4.2.3, 7.4.2.4, 7.4.3, 7.4.4, 7.4.5, 7.4.6, 7.4.7
    First fixed release7.4.8
  6. 7.3
    Affected versions7.3, 7.3.1, 7.3.1.1, 7.3.1.2
    First fixed releaseNot published in the sources followed
  7. 7.2
    Affected versions7.2, 7.2.0.1, 7.2.1, 7.2.2
    20 releases listed7.2, 7.2.0.1, 7.2.1, 7.2.2, 7.2.3, 7.2.3.1, 7.2.4, 7.2.4.1, 7.2.5, 7.2.5.1, 7.2.5.2, 7.2.6, 7.2.7, 7.2.8, 7.2.8.1, 7.2.9, 7.2.10, 7.2.10.1, 7.2.10.2, 7.2.11
    First fixed release7.2.12
  8. 7.0
    Affected versions7.0, 7.0.0.1, 7.0.1, 7.0.1.1
    17 releases listed7.0, 7.0.0.1, 7.0.1, 7.0.1.1, 7.0.2, 7.0.2.1, 7.0.3, 7.0.4, 7.0.5, 7.0.6, 7.0.6.1, 7.0.6.2, 7.0.6.3, 7.0.7, 7.0.8, 7.0.8.1, 7.0.9
    First fixed release7.0.10

Remediation

Fix available

Vendor fix

  • Secure Firewall Management Center (FMC) 10.110.1
  • Secure Firewall Management Center (FMC) 10.010.0.2
  • Secure Firewall Management Center (FMC) 7.77.7.13
  • Secure Firewall Management Center (FMC) 7.67.6.6
  • Secure Firewall Management Center (FMC) 7.47.4.8
  • Secure Firewall Management Center (FMC) 7.27.2.12
  • Secure Firewall Management Center (FMC) 7.07.0.10

Upgrade to a fixed release listed above for your branch, or to a later fixed release the vendor explicitly supports.

Cisco has released updates that fix this vulnerability; its advisory lists them.

SourceCisco Security Advisory cisco-sa-fmc-static-cred-BET3Cjh

Workarounds (vendor)

Cisco states in its advisory that no workaround is available.

SourceCisco Security Advisory cisco-sa-fmc-static-cred-BET3Cjh

CISA KEV required action

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).

Full CISA action

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 due date:

SourceCISA KEV

CERT-FR recommendation

Refer to the vendor's security bulletin to obtain patches (see Documentation section).

SourceCERTFR-2026-AVI-0950

Last verified 1 Oct 2026 at 09:31 UTC

Known exploitation

Added to CISA KEV on 29 Jul 2026

Federal remediation due date: 1 Aug 2026

Known use in ransomware campaigns

The CISA required action is shown under Remediation.

35% probability of exploitation in the next 30 days (percentile 98%).

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CERT-FR

1 document of the French national CERT (ANSSI) references this CVE.

Advisory (AVI)CERTFR-2026-AVI-0950Published 30 Jul 2026

Vulnerability in Cisco Firewall Management Center

Security policy bypassData confidentiality breach

Summary

A vulnerability has been discovered in Cisco Firewall Management Center. It allows an attacker to cause a data confidentiality breach and a security policy bypass. Cisco indicates that vulnerability CVE-2026-20316 is being actively exploited.

Recommendation

Refer to the vendor's security bulletin to obtain patches (see Documentation section).

Official document on cert.ssi.gouv.frread by Patcharo 28 Sept 2026 at 20:03 UTCMachine translation of the French text published by CERT-FR; a text whose translation did not pass Patcharo's checks stays in French. Identifiers, versions and links are copied unchanged.

Timeline

  1. Added to CISA KEV
  2. Published by the source
  3. CISA remediation due date
  4. Source record last modified
  5. EPSS score computed
  6. Last verified by Patcharo

Official sources

References

Cisco · CISA Known Exploited Vulnerabilities · NVD · FIRST EPSS · Cisco Security Advisory cisco-sa-fmc-static-cred-BET3Cjh

How Patcharo reads this

Affected and fixed releases come from the vendor's structured statements and are matched against exact versions; CVSS from NVD, exploitation from CISA KEV and the vendor's own advisory, probability from FIRST EPSS. Missing data stays Unknown and never becomes Not affected.

Read the methodologyRead the guide: Cisco Secure Firewall release trains: Threat Defense, Management Center and ASA versions explained

Related vulnerabilities

Other records affecting the same products, newest first.

  • CVE-2026-20131Cisco Secure Firewall Management Center Software Remote Code Execution VulnerabilityCriticalKEVRansomware
  • CVE-2026-20079Cisco Secure Firewall Management Center Authentication Bypass Remote Code Execution VulnerabilityCriticalKEV

All Secure Firewall Management Center (FMC) vulnerabilitiesAll Cisco vulnerabilities