vulnerability
Splunk: CVE-2025-20387: Incorrect permissions assignment on Splunk Universal Forwarder for Windows during new installation or upgrade
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 9 | (AV:N/AC:M/Au:S/C:C/I:C/A:C) | Dec 3, 2025 | Dec 4, 2025 | Jan 16, 2026 |
Severity
9
CVSS
(AV:N/AC:M/Au:S/C:C/I:C/A:C)
Published
Dec 3, 2025
Added
Dec 4, 2025
Modified
Jan 16, 2026
Description
In Splunk Universal Forwarder for Windows versions below 10.0.2, 9.4.6, 9.3.8, and 9.2.10, a new installation of or an upgrade to an affected version can result in incorrect permissions assignment in the Universal Forwarder for Windows Installation directory (by default, C:\Program Files\SplunkUniversalForwarder). This lets non-administrator users on the machine access the directory and all its contents.
Solution
splunk-upgrade-latest
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