CVE-2025-24813 – Path Equivalence in Apache Tomcat Default Servlet

Abstract

Path Equivalence: 'file.Name' (Internal Dot) leading to Remote Code Execution and/or Information disclosure and/or malicious content added to uploaded files via write enabled Default Servlet in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.2, from 10.1.0-M1 through 10.1.34, from 9.0.0.M1 through 9.0.98. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 though 8.5.100. Other, older, EOL versions may also be affected. If all of the following were true, a malicious user was able to view security sensitive files and/or inject content into those files: - writes enabled for the default servlet (disabled by default) - support for partial PUT (enabled by default) - a target URL for security sensitive uploads that was a sub-directory of a target URL for public uploads - attacker knowledge of the names of security sensitive files being uploaded - the security sensitive files also being uploaded via partial PUT If all of the following were true, a malicious user was able to perform remote code execution: - writes enabled for the default servlet (disabled by default) - support for partial PUT (enabled by default) - application was using Tomcat's file based session persistence with the default storage location - application included a library that may be leveraged in a deserialization attack Users are recommended to upgrade to version 11.0.3, 10.1.35 or 9.0.99, which fixes the issue.

The Oxygen products incorporate Apache Tomcat as a third‑party component. This advisory was opened to address the potential impact of this third‑party component’s vulnerability.

Affected Products/Versions

Mitigation

None

Detail

CVE-2025-24813

Severity: Critical

CVSS Score: 9.8

A path equivalence issue when handling names containing an internal dot in the Default Servlet, combined with specific server configurations, may allow information disclosure, malicious content injection into uploaded files, or remote code execution. Exploitation requires writes enabled for the Default Servlet (disabled by default), support for partial PUT (enabled by default), and additional environmental preconditions.

Our deployments do not enable "writes" on Tomcat’s Default Servlet, and therefore our products are not exploitable by this issue. We updated bundled Tomcat to fixed upstream versions as part of routine maintenance.