CVEs / CVE-2025-24813

CVE-2025-24813: Apache Tomcat Path Equivalence Vulnerability

• Known exploited in the CISA KEV catalog since 1 Apr 2025
• critical 9.8 CVSS 3.1 (NVD)
• EPSS 99.9% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
• Last changed at its sources 28 Oct 2026

Summary

Apache Tomcat contains a path equivalence vulnerability that allows a remote attacker to execute code, disclose information, or inject malicious content via a partial PUT request. This vulnerability can be chained with CVE‑2026‑34486.

Description

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 and fixed versions

Package versions from GHSA-83qj-6fr2-vhqg.

Exploitation

Severity

References

• CVE-2025-24813 on NVD
• CVE-2025-24813 in the CISA KEV catalog
• https://lists.apache.org/thread/j5fkjv2k477os90nczf2v9l61fb0kkgq (cited by CISA)
• CVE-2025-24813 on OSV
• https://lists.apache.org/thread/j5fkjv2k477os90nczf2v9l61fb0kkgq Vendor Advisory
• http://www.openwall.com/lists/oss-security/2025/03/10/5 Mailing List, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2025/04/msg00003.html Mailing List, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20250321-0001/ Third Party Advisory
• https://www.vicarius.io/vsociety/posts/cve-2025-24813-detect-apache-tomcat-rce Issue Tracking
• https://www.vicarius.io/vsociety/posts/cve-2025-24813-mitigate-apache-tomcat-rce Issue Tracking
• https://www.vicarius.io/vsociety/posts/cve-2025-24813-tomcat-detect-vulnerability Issue Tracking
• https://www.vicarius.io/vsociety/posts/cve-2025-24813-tomcat-mitigation-vulnerability Issue Tracking
• https://github.com/absholi7ly/POC-CVE-2025-24813/blob/main/README.md Exploit
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-24813 Third Party Advisory, US Government Resource