CVE-2025-64471 Auth bypass in FortiWeb
Unauthenticated attackers can bypass authentication by using password hashes instead of passwords in crafted requests, leading to account takeover.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-64471?
CVE-2025-64471 is a medium-severity authentication bypass vulnerability in Fortinet Fortiweb, published on 9 Dec 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A use of password hash instead of password for authentication vulnerability [CWE-836] vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.1, FortiWeb 7.6.0 through 7.6.5, FortiWeb 7.4.0 through 7.4.10, FortiWeb 7.2.0 through 7.2.11, FortiWeb 7.0.0 through 7.0.11 may allow an unauthenticated attacker to use the hash in place of the password to authenticate via crafted HTTP/HTTPS requests
Weakness: CWE-836
Which versions are affected by CVE-2025-64471?
It affects 1 product.
Products include Fortinet Fortiweb.
How do I fix CVE-2025-64471?
No fix has been published for CVE-2025-64471 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2025-64471 being exploited?
There is no known exploitation of CVE-2025-64471 in the wild and no public exploit code.
Other vulnerabilities in Fortinet Fortiweb
Sources
Also known as GHSA-rr29-mpmg-47mc.