What’s Vulnerable › Vulnerabilities
CVE-2025-20300: Improper Access Control Lets Low-Privilege Users Suppress Read-Only Alerts in Splunk Enterprise
- Severity: medium (CVSS 4.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-07-07 · updated 2026-06-17
- Weakness: CWE-863
Description
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 Enterprise: from 9.1.0 before 9.1.9; from 9.2.0 before 9.2.6; from 9.3.0 before 9.3.5; from 9.4.0 before 9.4.2 — fixed in 9.1.9, 9.2.6, 9.3.5, 9.4.2
- Splunk Cloud Platform: from 9.2.2406 before 9.2.2406.118; from 9.3.2408 before 9.3.2408.112; from 9.3.2411 before 9.3.2411.103 — fixed in 9.2.2406.118, 9.3.2408.112, 9.3.2411.103
How to fix
Upgrade to a fixed version: Splunk Enterprise 9.1.9, 9.2.6, 9.3.5, 9.4.2; Splunk Cloud Platform 9.2.2406.118, 9.3.2408.112, 9.3.2411.103. Check the vendor advisory for mitigations.
References
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