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VulnerabilityPublished Updated

CVE-2025-53951: Fortinet FortiDLP · Escalation of Privilege

Affects Fortinet FortiDLPSource CVE Database V5

0

Public exploit available · CVSS 4.9 Medium · patch available : patch Fortinet FortiDLP as a priority.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score
4.9Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:F/RL:O/RC:C

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 16 Oct 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: evidence found.

    CVSS exploit maturity: proof of concept public

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Fortinet FortiDLPAffected
  • 11.5.1
  • 11.4.2
  • 11.3.2
  • 11.2.3
  • 11.2.0
  • 11.1.1
  • 11.0.1
  • 10.5.1
  • 10.4.0
  • 10.3.1
Fixed in–

AI-suggested

An official fix is available from Fortinet to remediate this vulnerability. Users of affected FortiDLP versions should apply the vendor-provided patches promptly to mitigate the risk of privilege escalation. Since this is not a cloud service, remediation requires updating the affected software versions on-premises.

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.

References

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