CVE-2025-64446: Fortinet FortiWeb Path Traversal Vulnerability

Should you act?

Exploited: patch now if you run it

CISA has confirmed exploitation in the wild. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.

• Yes, if you run Fortinet FortiWeb. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2025-11-14, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2025-11-21; treat that as the outer limit, not the target.
• EPSS 92.0%, percentile 99.8: FIRST’s model estimates a 92.0% chance of exploitation activity in the next 30 days, higher than 99.8% of all scored CVEs (very high). EPSS is a probability, not a verdict.
• Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
• Editorial verdict: Act now. FortiWeb CVE-2025-64446: Exploited Unauthenticated Takeover — Any FortiWeb still below the fixed builds with its web GUI reachable from the internet should be presumed compromised and rebuilt, not just patched.

What it is

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.

CISA’s summary

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.

Weakness type: CWE-23.

Product: Fortinet FortiWeb · Assigned by: fortinet · Published: 2025-11-14

Affected and fixed versions

Severity scores

• Attack vector: network (remotely reachable)
• Attack complexity: low
• Privileges required: none (no login)
• User interaction: none
• Scope: unchanged

CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.

Exploitation and urgency

• CISA KEV: added 2025-11-14; federal due date 2025-11-21. Known ransomware use: Unknown.
• 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 SSVC assessment: exploitation active, automatable yes, technical impact total.
• FIRST EPSS (model of 2026-10-21): 91.97% probability of exploitation activity in the next 30 days; percentile 99.8.

Timeline

• 2025-11-14 — Added to CISA’s Known Exploited Vulnerabilities catalog
• 2025-11-14 — CVE record published by fortinet
• 2025-11-14 — erroneo.us brief: FortiWeb CVE-2025-64446: Exploited Unauthenticated Takeover
• 2025-11-21 — CISA remediation deadline for US federal agencies
• 2026-02-26 — CVE record last updated

Sources and references

Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.

Vendor and project advisories, patches

1. Listed in CISA KEV notes (fortiguard.com) fortiguard.com

Vulnerability records

1. CVE.org record CVE-2025-64446 cve.org
2. NVD entry CVE-2025-64446 nvd.nist.gov

Government

1. CISA Known Exploited Vulnerabilities catalog entry cisa.gov

Other references from the CVE record and advisory

1. fortiguard.fortinet.com fortiguard.fortinet.com
2. github.com github.com

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