# CVE-2026-20204

## Summary

- **CVE ID:** CVE-2026-20204
- **Severity:** HIGH
- **CVSS Score:** 7.1 (CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H)
- **CWE:** CWE-377
- **Published:** Apr 15, 2026
- **Last Modified:** Apr 16, 2026

## 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.

## Affected Products

- Splunk — Splunk Enterprise (10.2)
- Splunk — Splunk Enterprise (10.0)
- Splunk — Splunk Enterprise (9.4)
- Splunk — Splunk Enterprise (9.3)
- Splunk — Splunk Cloud Platform (10.4.2603)
- Splunk — Splunk Cloud Platform (10.3.2512)
- Splunk — Splunk Cloud Platform (10.2.2510)
- Splunk — Splunk Cloud Platform (10.1.2507)
- Splunk — Splunk Cloud Platform (10.0.2503)
- Splunk — Splunk Cloud Platform (9.3.2411)

## References

- [CNA](https://advisory.splunk.com/advisories/SVD-2026-0403)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 3.28%
- **EPSS Percentile:** 87.7

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._