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CVE-2025-53951: Path traversal in FortiDLP
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.
Published
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| FortiDLP 11.5 | See the advisory |
| FortiDLP 11.4.2 to 11.4.6 | Upgrade past 11.4.6; see the advisory |
| FortiDLP 11.3.2 to 11.3.4 | Upgrade past 11.3.4; see the advisory |
| FortiDLP 11.2 | See the advisory |
| FortiDLP 11.2 | See the advisory |
| FortiDLP 11.1.1 to 11.1.2 | Upgrade past 11.1.2; see the advisory |
| FortiDLP 11.0 | See the advisory |
| FortiDLP 10.5 | See the advisory |
| FortiDLP 10.4 | See the advisory |
| FortiDLP 10.3 | See the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
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.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 10 Oct 2026.