CVE-2026-20204: 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…

PriorityP349high7.1CVSS 3.1

AVNACHPRLUIRSUCHIHAH

EPSS

3.28%

86.9th percentile

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.

Affected

14 ranges

Vendor	Product	Version range	Fixed in
splunk	splunk	—	—
splunk	splunk	>= 10.0.0 < 10.0.5	10.0.5
splunk	splunk	>= 9.3.0 < 9.3.11	9.3.11
splunk	splunk	>= 9.4.0 < 9.4.10	9.4.10
splunk	splunk_cloud_platform	>= 10.0.2503 < 10.0.2503.13	10.0.2503.13
splunk	splunk_cloud_platform	>= 10.1.2507 < 10.1.2507.19	10.1.2507.19
splunk	splunk_cloud_platform	>= 10.2.2510 < 10.2.2510.9	10.2.2510.9
splunk	splunk_cloud_platform	>= 10.3.2512 < 10.3.2512.5	10.3.2512.5
splunk	splunk_cloud_platform	>= 10.4.2603 < Not Affected	Not Affected
splunk	splunk_cloud_platform	>= 9.3.2411 < 9.3.2411.127	9.3.2411.127
splunk	splunk_enterprise	>= 10.0 < 10.0.5	10.0.5
splunk	splunk_enterprise	>= 10.2 < 10.2.1	10.2.1
splunk	splunk_enterprise	>= 9.3 < 9.3.11	9.3.11
splunk	splunk_enterprise	>= 9.4 < 9.4.10	9.4.10

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