Improper input validation in Splunk
CVE-2025-20389
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).
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.004 (34.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 34.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Splunk
- Splunk Cloud Platform — versions 10.1.2507, 10.0.2503, 9.3.2411
- Splunk Cloud Platform
- Splunk Enterprise — versions 10.0, 9.4, 9.3
- Splunk Secure Gateway — versions 3.9, 3.8, 3.7
- Splunk Secure Gateway
Weakness classification (CWE)
References
- advisory.splunk.com/advisories/SVD-2025-1208 (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-20389?
- CVE-2025-20389 is a medium-severity vulnerability in Splunk, classified under Improper Input Validation. CVSS score: 4.3/10. Published 2025-12-03.
- How severe is CVE-2025-20389?
- Medium severity. CVSS v3 base score is 4.3 out of 10.