CVE-2025-24813

CVE-2025-24813 is a critical-severity (CVSS 9.8) vulnerability in Apache Tomcat. CISA added it to the Known Exploited Vulnerabilities catalog on April 1, 2025, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by April 22, 2025. CISA does not currently list it as used in ransomware campaigns. Apache has 41 vulnerabilities in the KEV catalog, 8 of them linked to ransomware.

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.

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

• https://lists.apache.org/thread/j5fkjv2k477os90nczf2v9l61fb0kkgq
• http://www.openwall.com/lists/oss-security/2025/03/10/5
• https://lists.debian.org/debian-lts-announce/2025/04/msg00003.html
• https://security.netapp.com/advisory/ntap-20250321-0001/
• https://www.vicarius.io/vsociety/posts/cve-2025-24813-detect-apache-tomcat-rce
• https://www.vicarius.io/vsociety/posts/cve-2025-24813-mitigate-apache-tomcat-rce
• https://www.vicarius.io/vsociety/posts/cve-2025-24813-tomcat-detect-vulnerability
• https://www.vicarius.io/vsociety/posts/cve-2025-24813-tomcat-mitigation-vulnerability