What is CVE-2025-64157?

CVE-2025-64157 is a medium-severity vulnerability in Fortinet Fortios, classified under Use of Externally-Controlled Format String. CVSS score: 6.7/10. Published 2026-02-10.

How severe is CVE-2025-64157?

Medium severity. CVSS v3 base score is 6.7 out of 10.

Vulnerability in Fortinet Fortios

CVE-2025-64157

A use of externally-controlled format string vulnerability in Fortinet FortiOS 7.6.0 through 7.6.4, FortiOS 7.4.0 through 7.4.9, FortiOS 7.2.0 through 7.2.11, FortiOS 7.0 all versions allows an authenticated admin to execute unauthorized code or commands via specifically crafted configuration.

EPSS: 0.014 (69.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Fortinet Fortios — versions 7.6.0, 7.4.0, 7.2.0

Weakness classification (CWE)

CWE-134 — Use of Externally-Controlled Format String

References

psirt@fortinet.com (Vendor Advisory)
0b142b55-0307-4c5a-b3c9-f314f3fb7c5e

Frequently asked questions

What is CVE-2025-64157?: CVE-2025-64157 is a medium-severity vulnerability in Fortinet Fortios, classified under Use of Externally-Controlled Format String. CVSS score: 6.7/10. Published 2026-02-10.
How severe is CVE-2025-64157?: Medium severity. CVSS v3 base score is 6.7 out of 10.