Riskcovery

CVE-2026-20131

Cisco Secure Firewall Management Center Software Remote Code Execution Vulnerability

State
Published
Severity
10.0 Critical
Published
Mar 4, 2026
Updated
Aug 14, 2026
Reserved
Oct 8, 2025

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.110.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:Hcisco

Weaknesses

  • CWE-502 Deserialization of Untrusted Data

Affected Products

ProductVersions
Cisco Secure Firewall Management Center (FMC)Cisco
  • 7.0.0Affected
  • 7.0.0.1Affected
  • 7.0.1Affected
  • 7.1.0Affected
  • 6.4.0.13Affected
  • 7.0.1.1Affected
  • 6.4.0.14Affected
  • 7.1.0.1Affected
  • 7.0.2Affected
  • 6.4.0.15Affected
  • 7.2.0Affected
  • 7.0.2.1Affected
  • 7.0.3Affected
  • 7.1.0.2Affected
  • 7.2.0.1Affected
  • 7.0.4Affected
  • 7.2.1Affected
  • 7.0.5Affected
  • 6.4.0.16Affected
  • 7.3.0Affected
  • 7.2.2Affected
  • 7.3.1Affected
  • 7.2.3Affected
  • 7.1.0.3Affected
  • 7.2.3.1Affected
  • and 45 more versions

References

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