CVE-2025-25256

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.

CVSS v3.1 Score

9.8

CRITICAL

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

Weakness Type (CWE)

CWE-78 OS Command Injection

Affected Products

Vendor	Product	Versions
fortinet	fortisiem	5.4.0 — 6.7.10
fortinet	fortisiem	7.0.0 — 7.0.4
fortinet	fortisiem	7.1.0 — 7.1.8
fortinet	fortisiem	7.2.0 — 7.2.6
fortinet	fortisiem	7.3.0 — 7.3.2

References

Advisories & Patches

https://fortiguard.fortinet.com/psirt/FG-IR-25-152

Other References

https://www.theregister.com/2025/08/13/fortinet_discloses_critical_bug/ https://github.com/watchtowrlabs/watchTowr-vs-FortiSIEM-CVE-2025-25256 https://labs.watchtowr.com/should-security-solutions-be-secure-maybe-were-all-wrong-fortinet-fortisiem-pre-auth-command-injection-cve-2025-25256/

Frequently Asked Questions

What is CVE-2025-25256? +

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. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2025-25256? +

CVE-2025-25256 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2025-25256? +

CVE-2025-25256 affects products from fortinet, specifically: fortisiem. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-25256? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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