CVE-2025-20389: Splunk

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

In Splunk Enterprise versions below 10.0.2, 9.4.6, 9.3.8, and 9.2.10, and versions below 3.9.10, 3.8.58 and 3.7.28 of the Splunk Secure Gateway app on Splunk Cloud Platform, a low-privileged user that does not hold the "admin" or "power" Splunk roles could craft a malicious payload through the `label` column field after adding a new device in the Splunk Secure Gateway app. This could potentially lead to a client-side denial of service (DoS).

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); from 10.0.0, before 10.0.2 (fixed in 10.0.2)
• Splunk Splunk Cloud Platform: from 9.3.2411, before 9.3.2411.120 (fixed in 9.3.2411.120); from 10.0.2503, before 10.0.2503.8 (fixed in 10.0.2503.8); from 10.1.2507, before 10.1.2507.6 (fixed in 10.1.2507.6)
• Splunk Splunk Secure Gateway: from 3.7.0, before 3.7.28 (fixed in 3.7.28); from 3.8.0, before 3.8.58 (fixed in 3.8.58); from 3.9.0, before 3.9.10 (fixed in 3.9.10)

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