SB2026011363 - Unauthenticated remote command injection in FortiSIEM

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Main Vulnerability Database SB2026011363

SB2026011363 - Unauthenticated remote command injection in FortiSIEM

Published: January 13, 2026 Updated: January 16, 2026

Security Bulletin ID SB2026011363
CSH Severity
Critical
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Critical 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) OS command injection (CVE-ID: CVE-2025-64155)

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Red


The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation in phMonitor. A remote unauthenticated attacker can send specially crafted packets to port 7900/TCP and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Remediation

Install update from vendor's website.

References