Splunk Enterprise and Cloud Platform
CVE-2025-20384: Unauthenticated Log Injection in Splunk Enterprise
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.
Published
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| Splunk Enterprise 10.0 | 10.0.1 or later |
| Splunk Enterprise 9.4 | 9.4.6 or later |
| Splunk Enterprise 9.3 | 9.3.8 or later |
| Splunk Enterprise 9.2 | 9.2.10 or later |
| Splunk Cloud Platform 10.1 | 10.1.2507.4 or later |
| Splunk Cloud Platform 10.0 | 10.0.2503.6 or later |
| Splunk Cloud Platform 9.3 | 9.3.2411.117 or later |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
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.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.