CVE-2025-20229: 
Splunk Enterprise vulnerability analysis and mitigation

A high-severity vulnerability (CVE-2025-20229) with a CVSS score of 8.0 was discovered in Splunk Enterprise and Splunk Cloud Platform. The vulnerability affects Splunk Enterprise versions below 9.3.3, 9.2.5, and 9.1.8, and Splunk Cloud Platform versions below 9.3.2408.104, 9.2.2406.108, 9.2.2403.114, and 9.1.2312.208. This security flaw allows low-privileged users without 'admin' or 'power' roles to perform Remote Code Execution (RCE) through file uploads to the '$SPLUNK_HOME/var/run/splunk/apptemp' directory (Splunk Advisory, NVD).

The vulnerability is tracked as CVE-2025-20229 with a CVSSv3.1 vector of CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H, indicating remote exploitation with low complexity and privileges but requiring user interaction. The security defect is caused by missing authorization checks in the file upload process to the '$SPLUNK_HOME/var/run/splunk/apptemp' directory. It is associated with CWE-284 (Improper Access Control) and has been assigned Bug ID VULN-19218 (GBHackers, Splunk Advisory).

The vulnerability enables low-privileged users to execute arbitrary code remotely on affected systems through malicious file uploads. This could potentially lead to complete system compromise with high impacts on confidentiality, integrity, and availability of the affected Splunk instances (SecurityWeek).

Splunk has released patches to address this vulnerability. Organizations should upgrade to Splunk Enterprise versions 9.4.0, 9.3.3, 9.2.5, or 9.1.8, and ensure Splunk Cloud Platform instances are updated to versions 9.3.2408.104, 9.2.2406.108, 9.2.2403.114, or 9.1.2312.208. Splunk is actively monitoring and patching affected Splunk Cloud Platform instances (Security Online, Splunk Advisory).