Improper Output Neutralization for Logs in Splunk Enterprise - CVE-2025-20384
Published: December 4, 2025
Vulnerability identifier: #VU119117
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-20384
CWE-ID: CWE-117
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to manipulate application logs.
The vulnerability exists due to improper input validation at the "/en-US/static/" web endpoint. A remote non-authenticated attacker can inject American National Standards Institute (ANSI) escape codes into Splunk log files and manipulate their contents.
Affected software
Splunk Enterprise
How to mitigate CVE-2025-20384
Install updates from vendor's website.
Splunk Enterprise - addressed in versions 9.2.10, 9.3.8, 9.4.6, 10.0.1