CVE-2025-20388: Splunk

Low severity, CVSS 2.7. EPSS: 0.4% chance of exploitation in the next 30 days.

In Splunk Enterprise versions below 10.0.1, 9.4.6, 9.3.8, and 9.2.10, and Splunk Cloud Platform versions below 10.1.2507.4, 10.0.2503.7, and 9.3.2411.116, a user who holds a role that contains the high privilege capability `change_authentication` could enumerate internal IP addresses and network ports when adding new search peers to a Splunk search head in a distributed environment.

Affected products

• Splunk Splunk: from 9.2.0, before 9.2.10 (fixed in 9.2.10); from 9.3.0, before 9.3.8 (fixed in 9.3.8); from 9.4.0, before 9.4.6 (fixed in 9.4.6); version 10.0.0 only
• Splunk Splunk Cloud Platform: from 9.3.2411, before 9.3.2411.116 (fixed in 9.3.2411.116); from 10.0.2503, before 10.0.2503.6 (fixed in 10.0.2503.6); from 10.1.2507, before 10.1.2507.4 (fixed in 10.1.2507.4)

Published 2025-12-03. Last modified 2026-06-17.