Vulnerability Description
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in Apache Tomcat when using the APR/Native connector. This was particularly noticeable with client initiated closes of HTTP/2 connections. This issue affects Apache Tomcat: from 9.0.0.M1 through 9.0.106. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 through 8.5.100. Other, older, EOL versions may also be affected. Users are recommended to upgrade to version 9.0.107, which fixes the issue.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Tomcat | >= 9.0.0, < 9.0.107 |
Related Weaknesses (CWE)
References
- https://lists.apache.org/thread/gxgh65004f25y8519coth6w7vchww030Issue TrackingMailing ListVendor Advisory
- http://www.openwall.com/lists/oss-security/2025/07/10/11
- https://lists.debian.org/debian-lts-announce/2025/07/msg00009.html
FAQ
What is CVE-2025-52434?
CVE-2025-52434 is a vulnerability with a CVSS score of 7.5 (HIGH). Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in Apache Tomcat when using the APR/Native connector. This was particularly noticeable with cl...
How severe is CVE-2025-52434?
CVE-2025-52434 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-52434?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Tomcat.