Medium severity · published Dec 3, 2025
CVE-2025-20387
Incorrect permissions assignment on Splunk Universal Forwarder for Windows during new installation or upgrade
6.5
CVSS
0.5%
EPSS
No
On KEV
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. This lets non-administrator users on the machine access the directory and all its contents.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 42% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
Splunk Enterprise · Splunk
10.0 before 10.0.2; 9.4 before 9.4.6; 9.3 before 9.3.8; 9.2 before 9.2.10 · source: vendor
SP
Splunk · Splunk
9.2.0 before 9.2.10; 9.3.0 before 9.3.8; 9.4.0 before 9.4.6; 10.0.0 before 10.0.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-20387
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-20387
Vendor Advisory
https://advisory.splunk.com/advisories/SVD-2025-1206
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