Incorrect permission assignment for critical resource in Splunk Universal Forwarder - CVE-2025-20387

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Main Vulnerability Database Vulnerabilities #VU119138

Incorrect permission assignment for critical resource in Splunk Universal Forwarder - CVE-2025-20387

Published: December 4, 2025


Vulnerability identifier: #VU119138
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-20387
CWE-ID: CWE-732
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Splunk Inc.
Affected software:
Splunk Universal Forwarder

Detailed vulnerability description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due incorrect permissions assignment for Windows Installation directory (by default, C:\\Program Files\\SplunkUniversalForwarder) during new installation or upgrade. A local user on the machine can access the directory and all its contents.


How to mitigate CVE-2025-20387

Install updates from vendor's website.

Sources