CVE-2026-20204
HIGHEPSS 87th pctlDescription
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.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Exploit Intelligence
Elevated risk: more likely to be exploited than 87% of all known CVEs.
References
Related Vulnerabilities
Other CWE-377 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2015-5224 | Critical | 9.8 | 4.5% | - | Fix |
| CVE-2018-3710 | High | 7.8 | 2.9% | - | Fix |
| CVE-2017-16024 | Medium | 6.5 | 2.6% | - | Fix |
| CVE-2012-2666 | Critical | 9.8 | 1.9% | - | - |
| CVE-2018-16494 | High | 8.8 | 1.9% | - | Fix |
| CVE-2011-4119 | Critical | 9.8 | 1.8% | - | - |
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Markdown
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<a href="https://tridentstack.com/cve/CVE-2026-20204"><img src="https://tridentstack.com/cve/badge/CVE-2026-20204.svg" alt="CVE-2026-20204"></a>Find and fix vulnerabilities across your fleet
TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.
This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-17.