CVE-2025-64446: Fortinet FortiWeb Path Traversal Vulnerability

In short

Fortinet FortiWeb has a weakness classified as relative path traversal (CWE-23). CISA added it to its Known Exploited Vulnerabilities catalog on 2025-11-14. NVD lists CVSS 3.1 at 9.8 CRITICAL.

What it is

“Fortinet FortiWeb contains a relative path traversal vulnerability that may allow an unauthenticated attacker to execute administrative commands on the system via crafted HTTP or HTTPS requests.” — CISA KEV, retrieved 2026-11-01

“A relative path traversal vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.1, FortiWeb 7.6.0 through 7.6.4, FortiWeb 7.4.0 through 7.4.9, FortiWeb 7.2.0 through 7.2.11, FortiWeb 7.0.0 through 7.0.11 may allow an attacker to execute administrative commands on the system via crafted HTTP or HTTPS requests.” — NVD, retrieved 2026-11-01

Who is affected

Fortinet FortiWeb. NVD lists the following versions as affected:

• Versions from 7.0.0 inclusive, before 7.0.12
• Versions from 7.2.0 inclusive, before 7.2.12
• Versions from 7.4.0 inclusive, before 7.4.10
• Versions from 7.6.0 inclusive, before 7.6.5
• Versions from 8.0.0 inclusive, before 8.0.2

Exploitation status

CISA KEV added: 2025-11-14. Known ransomware campaign use: Not reported by CISA. Due date CISA set for US federal civilian agencies: 2025-11-21.

Scores

NVD CVSS 3.1: 9.8 CRITICAL; vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H; source [email protected].

EPSS by FIRST: 91.08%; percentile 99.81; score date 2026-10-31. EPSS estimates the probability of exploitation in the next 30 days.

CWE: CWE-23.

Timeline

CISA required action

“Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.” — CISA KEV

What to do

• Confirm whether you run Fortinet FortiWeb and which version.
• Apply the vendor update or mitigation in the advisory.
• Follow CISA’s required action.
• Review the vendor guidance on signs of compromise.
• Track the fix through completion.

References

• Vendor Advisory: https://fortiguard.fortinet.com/psirt/FG-IR-25-910
• NVD detail
• CVE.org record
• CISA KEV catalog

Sources and dates

CISA Known Exploited Vulnerabilities Catalog, version 2026.10.30; retrieved 2026-11-01. CISA KEV data: CC0 1.0. No endorsement by CISA.

NVD retrieved: 2026-11-01. This product uses the NVD API but is not endorsed or certified by the NVD.

EPSS scores by FIRST; score date 2026-10-31.