How severe is CVE-2025-53951?

CVE-2025-53951 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2025-53951 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-53951?

CVE-2025-53951 affects Fortinet Fortidlp Agent. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-53951?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-53951 have an EU (EUVD) identifier?

Yes. CVE-2025-53951 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-34760.

When was CVE-2025-53951 published?

CVE-2025-53951 was published on 2025-10-16 and last updated on 2026-06-17.

CVE-2025-53951

CVE-2025-53951 is a medium-severity vulnerability in Fortinet Fortidlp Agent with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-34760
Weakness: CWE-22
Affected product: Fortinet Fortidlp Agent
Published: 2025-10-16
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-53951?: 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.
How severe is CVE-2025-53951?: CVE-2025-53951 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-53951 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-53951?: CVE-2025-53951 affects Fortinet Fortidlp Agent. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-53951?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-53951 have an EU (EUVD) identifier?: Yes. CVE-2025-53951 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-34760.
When was CVE-2025-53951 published?: CVE-2025-53951 was published on 2025-10-16 and last updated on 2026-06-17.

References

https://fortiguard.fortinet.com/psirt/FG-IR-25-628

Affected products (1)

cpe:2.3:a:fortinet:fortidlp_agent:*:*:*:*:*:*:*:*

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