CVE-2025-25256CRITICAL 9.8EPSS p98.9%

CVE-2025-25256CVE-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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS56.19% probability of exploitation · percentile 98.9% · 2026-06-17T12:03:21Z
Published2025-08-12
Last modified2025-08-15

Underlying weaknesses· 1

CWE-78

References

  1. https://fortiguard.fortinet.com/psirt/FG-IR-25-152
  2. https://www.theregister.com/2025/08/13/fortinet_discloses_critical_bug/
  3. https://github.com/watchtowrlabs/watchTowr-vs-FortiSIEM-CVE-2025-25256
  4. https://labs.watchtowr.com/should-security-solutions-be-secure-maybe-were-all-wrong-fortinet-fortisiem-pre-auth-command-injection-cve-2025-25256/

1

TypeTargetConfidenceTier
WeaknessImproper Neutralization of Special Elements used in an OS Command ('OS Command Injection')cwe-780%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.