CVE-2025-64446
CVE-2025-64446 is a security flaw in Fortinet FortiWeb, Fortinet’s business security equipment. Attackers can read files on Fortinet FortiWeb that should be out of reach from anywhere, without logging in. The US Cybersecurity and Infrastructure Security Agency (CISA) added it to its catalog of flaws known to be used in attacks on 14 Nov 2025.[1]
Fortinet FortiWeb is business software or equipment. Most families won’t have it, but attackers break into it to get inside companies, and from there to what those companies hold about their customers, patients and staff. Fortinet has published a fix or advice.
Description
CISA calls it a path traversal in Fortinet FortiWeb. In its words: “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.”[1]
The CVE record adds: “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.”[2]
The underlying weakness is CWE-23, in MITRE’s list of common software weaknesses.
It scores 9.8 out of 10 on the Common Vulnerability Scoring System, which rates it critical, scored by the organisation that published the CVE using CVSS 3.1.[2]
Affected versions
NVD’s record doesn’t list version ranges for it; Fortinet’s advisory has them[3]. CISA names the product as Fortinet FortiWeb.
Most families won’t have Fortinet FortiWeb; it’s for whoever looks after IT at work.
Exploitation
CISA added it to its catalog of known exploited vulnerabilities on 14 Nov 2025, within a day of it being made public. CISA lists a flaw only when it has reliable evidence of it being exploited, and gave US federal agencies until 21 Nov 2025 to fix it.[1]
FIRST’s Exploit Prediction Scoring System, which estimates how likely a flaw is to be used in attacks in the next 30 days from what it sees across the internet, puts it at 91%. That’s in the top 1% of the flaws it scores.[4]
CISA assesses it as automatable: attackers can run it against many targets at once.
CISA doesn’t say who was attacked, or how.
Fix
Fortinet has published a fix or advice.[3] CISA’s 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.”[1]
- Check whether you use it.Fortinet FortiWeb is business software or equipment, so most families won’t have it. If you run a business, or work from home on company equipment, ask whoever looks after your IT.
- Send this page to your IT person.Ask them to confirm it’s fixed, or not in use. CISA gave US government agencies until 21 Nov 2025 to fix it.
- If it can’t be fixed, take it offline.CISA’s advice when there’s no fix is to stop using the product, or take it off the internet, until there is one.
You can’t fix someone else’s server, but you can watch for what follows a break-in like this: a breach notice, a password reset you didn’t ask for, or a scam message that knows things it shouldn’t. HARD watches for those for you and your family.
Timeline
| Date | Event |
|---|---|
| The flaw is made public in the National Vulnerability Database, with a severity score of 9.8.[2] | |
| CISA adds it to its catalog of flaws known to be used in attacks.[1] | |
| CISA’s deadline for US government agencies to fix it.[1] | |
| FIRST puts the odds of it being used in attacks in the next 30 days at 91%.[4] |
See also
Other Fortinet FortiWeb flaws
- CVE-2025-58034: OS command injection ·
- CVE-2025-25257: SQL injection ·
Other Fortinet flaws
- CVE-2025-61624, Fortinet products: path traversal ·
- CVE-2026-104286, Fortinet FortiMail: path traversal ·
- CVE-2025-25249, Fortinet products: heap-based buffer overflow ·
- CVE-2025-68686, Fortinet FortiOS: exposure of sensitive information to an unauthorized actor ·
- CVE-2026-39808, Fortinet FortiSandbox: OS command injection ·
Similar flaws
- CVE-2026-76519, Cisco Secure Email Gateway: relative path traversal ·
- CVE-2026-34926, Trend Micro Apex One: (on-premise) directory traversal ·
- CVE-2024-27199, JetBrains TeamCity: relative path traversal ·
- CVE-2022-37042, Synacor Zimbra Collaboration Suite (ZCS): authentication bypass ·
- CVE-2021-38163, SAP NetWeaver: unrestricted file upload ·
Every Fortinet flaw on CISA’s list · Everything added in November 2025
References
- ^ Cybersecurity and Infrastructure Security Agency. “Fortinet FortiWeb Path Traversal Vulnerability”. Known Exploited Vulnerabilities Catalog, added 14 Nov 2025.
- ^ National Institute of Standards and Technology. “CVE-2025-64446 Detail”. National Vulnerability Database, published 14 Nov 2025.
- ^ Fortinet. Advisories and fixes: fortiguard.com, fortiguard.fortinet.com.
- ^ FIRST. “Exploit Prediction Scoring System”. EPSS 0.911, percentile 99.8, 31 Oct 2026.
- CVE Program. “CVE-2025-64446”. The official CVE record.
This article is built from CISA’s catalog (version 2026.10.30), NVD’s record and FIRST’s scores, kept in HARD’s database and checked every morning. The plain English is HARD’s.