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VULNERABILITIES

CVE-2026-20131 Details

Description

A vulnerability in the web-based management interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to execute arbitrary Java code as root on an affected device. This vulnerability is due to insecure deserialization of a user-supplied Java byte stream. An attacker could exploit this vulnerability by sending a crafted serialized Java object to the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary code on the device and elevate privileges to root. Note: If the FMC management interface does not have public internet access, the attack surface that is associated with this vulnerability is reduced.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:10 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://aws.amazon.com/blogs/security/amazon-threat-intelligence-teams-identify-interlock-ransomware-campaign-targeting-enterprise-firewalls/ CISA-ADPTechnical Description
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20131 CISA-ADPUS Government Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-rce-NKhnULJh [email protected]Vendor Advisory

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.

Vulnerability NameDate AddedDue DateRequired Action
Cisco Secure Firewall Management Center (FMC) Software and Cisco Security Cloud Control (SCC) Firewall Management Deserialization of Untrusted Data VulnerabilityMar 19, 2026Mar 22, 2026Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Weakness Enumeration

CWE-IDCWE NameSource
CWE-502Deserialization of Untrusted Data[email protected]

Affected Products

ProductVersions
cisco secure firewall management center
6.4.0.13
6.4.0.14
6.4.0.15
6.4.0.16
6.4.0.17

CPE

  • cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0.13:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0.14:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0.15:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0.16:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0.17:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:6.4.0.18:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.0.0:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.0.0.1:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.0.1:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.0.1.1:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.0.2:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.0.2.1:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.0.3:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.0.4:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.0.5:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.0.6:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.0.6.1:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.0.6.2:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.0.6.3:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.0.7:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.0.8:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.0.8.1:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.1.0.1:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.1.0.2:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.1.0.3:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.2.0:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.2.0.1:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.2.1:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.2.2:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.2.3:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.2.3.1:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.2.4:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.2.4.1:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.2.5:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.2.5.1:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.2.5.2:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.2.6:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.2.7:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.2.8:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.2.8.1:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.2.9:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.2.10:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.2.10.1:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.2.10.2:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.3.0:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.3.1:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.3.1.1:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.3.1.2:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.4.0:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.4.1:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.4.1.1:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.4.2:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.4.2.1:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.4.2.2:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.4.2.3:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.4.2.4:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.4.3:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.4.4:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.4.5:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.6.0:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.6.1:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.6.2:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.6.2.1:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.6.3:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.6.4:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.7.0:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.7.10:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.7.10.1:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:7.7.11:*:*:*:*:*:*:*
  • cpe:2.3:a:cisco:secure_firewall_management_center:10.0.0:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

10 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-20131
NVD Published Date:
Mar 4, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-20131 Details - Not Deferred