CVE-2025-20384

Published: Dec 3, 2025Modified: Jun 17, 2026

5.3

Vector

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

Exploitability: 3.9 / Impact: 1.4

Source: psirt@cisco.com (Secondary)

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.

Affected (7)

Products: Splunk: Splunk, Splunk Cloud Platform

Splunk

2 products

Splunk

Splunk Cloud Platform

Configuration A

7 vulnerable

Vulnerable Software	Affected Versions
Splunk Splunk	From 9.2.0 to 9.2.10
Splunk Splunk	From 9.3.0 to 9.3.8
Splunk Splunk	From 9.4.0 to 9.4.6
Splunk Splunk	Version 10.0.0
Splunk Splunk Cloud Platform	From 10.0.2503 to 10.0.2503.6
Splunk Splunk Cloud Platform	From 10.1.2507 to 10.1.2507.4
Splunk Splunk Cloud Platform	From 9.3.2411 to 9.3.2411.117

Related CWEs

CWE-117

Improper Output Neutralization for Logs

The product does not neutralize or incorrectly neutralizes output that is written to logs.

References (1)

https://advisory.splunk.com/advisories/SVD-2025-1203

Source: psirt@cisco.com

Vendor Advisory

Timeline

No history available yet.