What is CVE-2025-53847?

CVE-2025-53847 is a medium-severity vulnerability in Fortinet Fortios, classified under Missing Authentication for Critical Function. CVSS score: 6.5/10. Published 2026-04-14.

How severe is CVE-2025-53847?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Fortinet Fortios

CVE-2025-53847

A missing authentication for critical function vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11, FortiOS 7.0.0 through 7.0.17, FortiOS 6.4 all versions, FortiOS 6.2.9 through 6.2.17 allows attacker to execute unauthorized code or commands via specially crafted packets.

Vulnerability class: Broken Authentication

EPSS: 0.003 (20.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

Fortinet Fortios — versions 7.6.0, 7.4.0, 7.2.0

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

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

Frequently asked questions

What is CVE-2025-53847?: CVE-2025-53847 is a medium-severity vulnerability in Fortinet Fortios, classified under Missing Authentication for Critical Function. CVSS score: 6.5/10. Published 2026-04-14.
How severe is CVE-2025-53847?: Medium severity. CVSS v3 base score is 6.5 out of 10.