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Description

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.

PUBLISHED Reserved 2025-10-08 | Published 2026-04-15 | Updated 2026-04-16 | Assigner cisco




HIGH: 7.1CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

Problem types

Creating and using insecure temporary files can leave application and system data vulnerable to attack.

Product status

10.2 (custom) before 10.2.1
affected

10.0 (custom) before 10.0.5
affected

9.4 (custom) before 9.4.10
affected

9.3 (custom) before 9.3.11
affected

10.4.2603 (custom) before Not Affected
affected

10.3.2512 (custom) before 10.3.2512.5
affected

10.2.2510 (custom) before 10.2.2510.9
affected

10.1.2507 (custom) before 10.1.2507.19
affected

10.0.2503 (custom) before 10.0.2503.13
affected

9.3.2411 (custom) before 9.3.2411.127
affected

Credits

Gabriel Nitu, Splunk

References

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

cve.org (CVE-2026-20204)

nvd.nist.gov (CVE-2026-20204)

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