CVE-2025-20384 - CVE House
Back to Database
Status published Medium CVE-2025-20384

Unauthenticated Log Injection in Splunk Enterprise

Vulnerability Description

In Splunk Enterprise versions below 10.0.1, 9.4.6, 9.3.8, and 9.2.10, and Splunk Cloud Platform versions below 10.1.2507.4, 10.0.2503.6, and 9.3.2411.117.125, an unauthenticated attacker can inject American National Standards Institute (ANSI) escape codes into Splunk log files due to improper validation at the /en-US/static/ web endpoint. This may allow them to poison, forge, or obfuscate sensitive log data through specially crafted HTTP requests, potentially impacting log integrity and detection capabilities.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2025-20384

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • STÖK / Fredrik Alexandersson

References

More from Splunk

View All →
CVE-2025-22621
Privilege escalation for users who hold the “splunk_app_soar“ role in the Splunk App for SOAR
Medium 6.4
CVE-2025-20389
Improper Input Validation in "label" column field in Splunk Secure Gateway App
Medium 4.3
CVE-2025-20388
Blind Server Side Request Forgery (SSRF) through Distributed Search Peers in Splunk Enterprise
Low 2.7
CVE-2025-20387
Incorrect permissions assignment on Splunk Universal Forwarder for Windows during new installation or upgrade
High 8
CVE-2025-20386
Incorrect permission assignment on Splunk Enterprise for Windows during new installation or upgrade
High 8

Affected Vendor

Affected Software

Splunk Enterprise, Splunk Cloud Platform
Vulnerable Versions:
10.0, 9.4, 9.3, 9.2, 10.1.2507, 10.0.2503, 9.3.2411

Timeline

Official Publish: December 3rd, 2025
Last Modified: December 3rd, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Weaknesses (CWE)

CWE-117

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.