CVE-2025-20389 json
Improper Input Validation in "label" column field in Splunk Secure Gateway App
published 2025-12-03 11 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-201001
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 38%
- public exploits
- 0
- none known
Summary
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).
Patch / fix
- Splunk Splunk Enterprise 9.2.10, 9.3.8, 9.4.6, 10.0.2
- Splunk Splunk Cloud Platform 9.3.2411.120, 10.0.2503.8, 10.1.2507.6
- Splunk Splunk Secure Gateway 3.7.28, 3.8.58, 3.9.10
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 11 mo ago
Exploit prediction
0.45% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Affected products
- Splunk Splunk Enterprise
- Splunk Splunk Cloud Platform
- Splunk Splunk Secure Gateway
Classification
- Weakness
-
- CWE-20 Improper Input Validation
References
-
advisory.splunk.com
/advisories/SVD-2025-1208
vendor-advisory
Sources
- CVE List CVE-2025-20389
- NVD CVE-2025-20389
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.