CVE-2025-53951 Path traversal in FortiDLP
An authenticated attacker can escalate privileges to LocalService via path traversal in the Outlookproxy plugin of FortiDLP Agent.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-53951?
CVE-2025-53951 is a medium-severity path traversal vulnerability in Fortinet FortiDLP, published on 16 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability [CWE-22] in Fortinet FortiDLP Agent's Outlookproxy plugin for Windows 11.5.1 and 11.4.2 through 11.4.6 and 11.3.2 through 11.3.4 and 11.2.0 through 11.2.3 and 11.1.1 through 11.1.2 and 11.0.1 and 10.5.1 and 10.4.0, and 10.3.1 may allow an authenticated attacker to escalate their privilege to LocalService via sending a crafted request to a local listening port.
Weakness: CWE-22
Which versions are affected by CVE-2025-53951?
It affects 1 product.
Products include Fortinet Fortidlp Agent.
How do I fix CVE-2025-53951?
No fix has been published for CVE-2025-53951 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2025-53951 being exploited?
There is no known exploitation of CVE-2025-53951 in the wild and no public exploit code.
Other vulnerabilities in Fortinet FortiDLP
Sources
Also known as GHSA-j566-3vgf-vxpp.