9.8

CVE-2025-25256: fortinet fortisiem OS Command Injection

CVSS: 9.8v3.1CriticalModified
Published 12-08-2025Last modified 18-08-2026
Open JSON

Vulnerability summary

CVE-2025-25256 is a critical (CVSS 9.8) OS Command Injection vulnerability in fortinet fortisiem. EPSS estimates a 65.30% chance of exploitation in the next 30 days, higher than 99.2% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
65.30%
0%100%
Critical · +2.49 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Timeline

  1. 12-08-2025
    PublishedVulnerability first disclosed.
  2. 18-08-2026
    Last modifiedVulnerability information updated.

Description

An improper neutralization of special elements used in an OS command ('OS Command Injection') vulnerability [CWE-78] vulnerability in Fortinet FortiSIEM 7.3.0 through 7.3.1, FortiSIEM 7.2.0 through 7.2.5, FortiSIEM 7.1.0 through 7.1.7, FortiSIEM 7.0.0 through 7.0.3, FortiSIEM 6.7.0 through 6.7.9, FortiSIEM 6.6 all versions, FortiSIEM 6.5 all versions, FortiSIEM 6.4 all versions, FortiSIEM 6.3 all versions, FortiSIEM 6.2 all versions, FortiSIEM 6.1 all versions, FortiSIEM 5.4 all versions, FortiSIEM 5.3 all versions, FortiSIEM 5.2 all versions, FortiSIEM 5.1 all versions, FortiSIEM 5.0 all versions, FortiSIEM 4.10 all versions, FortiSIEM 4.9 all versions, FortiSIEM 4.7 all versions allows an unauthenticated attacker to execute unauthorized code or commands via crafted CLI requests.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

65.30%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

+2.49 pp

From 62.81% on 18-09-2026

18-09-202618-10-2026
EPSS score
65.30%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Watchtowr Vs Fortisiem Cve 2025 25256

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Fortinet1 product
  • fortisiem≥ 7.3.0, ≤ 7.3.1 | ≥ 7.2.0, ≤ 7.2.5 | ≥ 7.1.0, ≤ 7.1.7 | ≥ 7.0.0, ≤ 7.0.3 | ≥ 6.7.0, ≤ 6.7.9 | ≥ 6.6.0, ≤ 6.6.5 | ≥ 6.5.0, ≤ 6.5.3 | ≥ 6.4.0, ≤ 6.4.4 | ≥ 6.3.0, ≤ 6.3.3 | ≥ 6.2.0, ≤ 6.2.1 | ≥ 6.1.0, ≤ 6.1.2 | 5.4.0 | ≥ 5.3.0, ≤ 5.3.3 | ≥ 5.2.5, ≤ 5.2.8 | ≥ 5.2.1, ≤ 5.2.2 | ≥ 5.1.0, ≤ 5.1.3 | ≥ 5.0.0, ≤ 5.0.1 | 4.10.0 | 4.9.0 | 4.7.2 | ≥ 5.4.0, < 6.7.10 | ≥ 7.0.0, < 7.0.4 | ≥ 7.1.0, < 7.1.8 | ≥ 7.2.0, < 7.2.6 | ≥ 7.3.0, < 7.3.2

1 vendor · 1 product

References

4 links