Insecure DLL loading in Splunk Enterprise - CVE-2026-20140
Published: February 19, 2026
Vulnerability identifier: #VU123092
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-20140
CWE-ID: CWE-427
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Splunk Inc.
Affected software:
Splunk Enterprise
Splunk Enterprise
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to the application loads DLL libraries in an insecure manner. A local user who can create a directory on the system drive where Splunk Enterprise is installed and write a malicious DLL into that directory can execute arbitrary code with elevated privileges.
The vulnerability affects Windows installations only.
How to mitigate CVE-2026-20140
Install updates from vendor's website.