CVE-2025-20300: Splunk

Medium severity, CVSS 4.3. EPSS: 0.3% chance of exploitation in the next 30 days.

In Splunk Enterprise versions below 9.4.2, 9.3.5, 9.2.6, and 9.1.9 and Splunk Cloud Platform versions below 9.3.2411.103, 9.3.2408.112, and 9.2.2406.119, a low-privileged user that does not hold the "admin" or "power" Splunk roles, and has read-only access to a specific alert, could suppress that alert when it triggers. See [Define alert suppression groups to throttle sets of similar alerts](https://help.splunk.com/en/splunk-enterprise/alert-and-respond/alerting-manual/9.4/manage-alert-trigger-conditions-and-throttling/define-alert-suppression-groups-to-throttle-sets-of-similar-alerts).

Affected products

• Splunk Splunk: from 9.1.0, before 9.1.9 (fixed in 9.1.9); from 9.2.0, before 9.2.6 (fixed in 9.2.6); from 9.3.0, before 9.3.5 (fixed in 9.3.5); from 9.4.0, before 9.4.2 (fixed in 9.4.2)
• Splunk Splunk Cloud Platform: from 9.2.2406, before 9.2.2406.118 (fixed in 9.2.2406.118); from 9.3.2408, before 9.3.2408.112 (fixed in 9.3.2408.112); from 9.3.2411, before 9.3.2411.103 (fixed in 9.3.2411.103)

Published 2025-07-07. Last modified 2026-06-17.