Home/CVE/In Splunk Enterprise versions below 10.2.1, 10.0.5, 9.4.10, and 9.3.11, and Splunk Cloud Platform versions below 10.4.26
CVE

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 10.4.26

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.

HIGH · CVSS 7.1 EPSS 0.00212
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-377Insecure Temporary File
▤

Affected Products & Versions

9
splunk>= 9.3.0 and < 9.3.11
splunk>= 9.4.0 and < 9.4.10
splunk>= 10.0.0 and < 10.0.5
splunkall versions
splunk cloud platform>= 9.3.2411 and < 9.3.2411.127
splunk cloud platform>= 10.0.2503 and < 10.0.2503.13
splunk cloud platform>= 10.1.2507 and < 10.1.2507.19
splunk cloud platform>= 10.2.2510 and < 10.2.2510.9
▣

Scoring & Timeline

7.1
HIGH · CVSS v3.1 · psirt@cisco.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD15 Apr 2026 · 04:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://advisory.splunk.com/advisories/SVD-2026-0403Vendor Advisory
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