CVE-2025-24813: Apache Tomcat Path Equivalence Vulnerability

Critical severity, CVSS 9.8. Actively exploited: in CISA KEV since 2025-04-01. EPSS: 99.9% chance of exploitation in the next 30 days.

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.

Affected products

• Apache Tomcat: before 9.0.99 (fixed in 9.0.99); from 10.1.1, before 10.1.35 (fixed in 10.1.35); from 11.0.1, before 11.0.3 (fixed in 11.0.3); version 10.1.0 only; version 11.0.0 only
• Debian Debian Linux: version 11.0 only
• Netapp Bootstrap OS: affected versions not specified

Published 2025-03-10. Last modified 2026-06-17.