What’s Vulnerable › Vulnerabilities
CVE-2025-20389: Improper Input Validation in "label" column field in Splunk Secure Gateway App
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-12-03 · updated 2026-06-17
- Weakness: CWE-20
Description
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 Enterprise: from 9.2.0 before 9.2.10; from 9.3.0 before 9.3.8; from 9.4.0 before 9.4.6; from 10.0.0 before 10.0.2 — fixed in 10.0.2, 9.2.10, 9.3.8, 9.4.6
- Splunk Cloud Platform: from 9.3.2411 before 9.3.2411.120; from 10.0.2503 before 10.0.2503.8; from 10.1.2507 before 10.1.2507.6 — fixed in 10.0.2503.8, 10.1.2507.6, 9.3.2411.120
- Splunk Secure Gateway: from 3.7.0 before 3.7.28; from 3.8.0 before 3.8.58; from 3.9.0 before 3.9.10 — fixed in 3.7.28, 3.8.58, 3.9.10
How to fix
Upgrade to a fixed version: Splunk Enterprise 10.0.2, 9.2.10, 9.3.8, 9.4.6; Splunk Cloud Platform 10.0.2503.8, 10.1.2507.6, 9.3.2411.120; Splunk Secure Gateway 3.7.28, 3.8.58, 3.9.10. Check the vendor advisory for mitigations.
References
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