CVE-2025-25256

CRITICAL EXPLOITED NUCLEI

Fortinet FortiSIEM - OS Command Injection

Title source: nuclei
STIX 2.1

Exploitation Summary

CVE-2025-25256 has been observed exploited in the wild (reported by VulnCheck KEV). EIP tracks 1 public exploit from researchers including watchtowrlabs. A Nuclei detection template is also available.

AI-analyzed exploit summary This repository contains a Python script that exploits CVE-2025-25256, an unauthenticated remote command execution vulnerability in FortiSIEM. The script crafts a malicious XML payload and sends it to the target via SSL socket to trigger command execution.

Description

An improper neutralization of special elements used in an OS command ('OS Command Injection') vulnerability [CWE-78] in Fortinet FortiSIEM version 7.3.0 through 7.3.1, 7.2.0 through 7.2.5, 7.1.0 through 7.1.7, 7.0.0 through 7.0.3 and before 6.7.9 allows an unauthenticated attacker to execute unauthorized code or commands via crafted CLI requests.

Exploits (1)

nomisec WORKING POC 18 stars
by watchtowrlabs · remote
https://github.com/watchtowrlabs/watchTowr-vs-FortiSIEM-CVE-2025-25256

This repository contains a Python script that exploits CVE-2025-25256, an unauthenticated remote command execution vulnerability in FortiSIEM. The script crafts a malicious XML payload and sends it to the target via SSL socket to trigger command execution.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: FortiSIEM (versions 6.1-7.3.1, excluding 7.4)
No auth needed
Prerequisites: Network access to target's port 7900
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Nuclei Templates (1)

Fortinet FortiSIEM - OS Command Injection
CRITICALby watchtowr,darses
Shodan: http.favicon.hash:-1341442175 || http.html:"var hst = location.hostname"
FOFA: icon_hash="-1341442175" || body="var hst = location.hostname"

Scores

CVSS v3 9.8
EPSS 0.5132
EPSS Percentile 98.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

VulnCheck KEV 2025-08-12
CWE
CWE-78
Status published
Products (1)
fortinet/fortisiem 5.4.0 - 6.7.10
Published Aug 12, 2025
Tracked Since Feb 18, 2026