CVE-2026-20204

EUVD-2026-22934

15.04.2026, 16:16

In Splunk Enterprise versions below 10.2.1, 10.0.5, 9.4.10, and 9.3.11, and Splunk Cloud Platform versions below 10.4.2603.0, 10.3.2512.5, 10.2.2510.9, 10.1.2507.19, 10.0.2503.13, and 9.3.2411.127, a low-privileged user that does not hold the `admin` or `power` Splunk roles could potentially perform a Remote Code Execution (RCE) by uploading a malicious file to the `$SPLUNK_HOME/var/run/splunk/apptemp` directory due to improper handling and insufficient isolation of temporary files within the `apptemp` directory.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
cisco	CNA	7.1 HIGH	NETWORK	HIGH	LOW	CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: Unknown

Early Detection

Affected products identified ahead of NVD analysis through intelligence sources.

Vendor	Product	Version	Source
splunk	splunk	10.2 ≤ 𝑥 < 10.2.1	CNA
splunk	splunk	10.0 ≤ 𝑥 < 10.0.5	CNA
splunk	splunk	9.4 ≤ 𝑥 < 9.4.10	CNA
splunk	splunk	9.3 ≤ 𝑥 < 9.3.11	CNA
splunk	splunk	10.3.2512 ≤ 𝑥 < 10.3.2512.5	CNA
splunk	splunk	10.2.2510 ≤ 𝑥 < 10.2.2510.9	CNA
splunk	splunk	10.1.2507 ≤ 𝑥 < 10.1.2507.19	CNA
splunk	splunk	10.0.2503 ≤ 𝑥 < 10.0.2503.13	CNA
splunk	splunk	9.3.2411 ≤ 𝑥 < 9.3.2411.127	CNA

Common Weakness Enumeration

CWE-377 - Insecure Temporary File
Creating and using insecure temporary files can leave application and system data vulnerable to attack.

References

https://advisory.splunk.com/advisories/SVD-2026-0403