CVE-2025-25256

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

65.29% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 99.2% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-08-18.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2025-08-12 18:59Z1 YR AGO

Last updated

2026-08-18 21:09Z2 MO AGO

Reserved

2025-02-05

Assigning CNA

fortinet

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

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

Data version

5.2

Document digest

dc4617c644f97142268d8db6e0a40e0d8282e2ca5c4b71ddf8bc49eb90f0ed65

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