What is CVE-2025-53609?

CVE-2025-53609 is a medium-severity vulnerability in Fortinet Fortiweb, classified under Relative Path Traversal. CVSS score: 4.9/10. Published 2025-09-09.

How severe is CVE-2025-53609?

Medium severity. CVSS v3 base score is 4.9 out of 10.

Is CVE-2025-53609 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Path Traversal in Fortinet Fortiweb

CVE-2025-53609

A Relative Path Traversal vulnerability [CWE-23] in FortiWeb 7.6.0 through 7.6.4, 7.4.0 through 7.4.8, 7.2.0 through 7.2.11, 7.0.2 through 7.0.11 may allow an authenticated attacker to perform an arbitrary file read on the underlying system via crafted requests.

EPSS: 0.084 (94.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.

Affected products

Fortinet Fortiweb — versions 7.6.0, 7.4.0, 7.2.0

Weakness classification (CWE)

CWE-23 — Relative Path Traversal

Public proof-of-concept exploits

References

psirt@fortinet.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-53609?: CVE-2025-53609 is a medium-severity vulnerability in Fortinet Fortiweb, classified under Relative Path Traversal. CVSS score: 4.9/10. Published 2025-09-09.
How severe is CVE-2025-53609?: Medium severity. CVSS v3 base score is 4.9 out of 10.
Is CVE-2025-53609 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.