Apache Tomcat Catalina is vulnerable to DoS attack through bypassing of size limits
For some unlikely configurations of multipart upload, an Integer Overflow vulnerability in Apache Tomcat could lead to a DoS via bypassing of size limits. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.8, from 10.1.0-M1 through 10.1.42, 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 11.0.9, 10.1.43 or 9.0.107, which fix the issue.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2025-52520US | — | — | ||
For some unlikely configurations of multipart upload, an Integer Overflow vulnerability in Apache Tomcat could lead to a DoS via bypassing of size limits.
This issue affects Apach… | ||||
references
External citations — patches, advisories, analysis.
- http://www.openwall.com/lists/oss-security/2025/07/10/12WEB
- https://github.com/apache/tomcatPACKAGE
- https://github.com/apache/tomcat/commit/927d66fbc294cb65242102b817a45fd80834e040WEB
- https://github.com/apache/tomcat/commit/a51e4bedccfafd35b7cdd0ee3e22267dee9f90dbWEB
- https://github.com/apache/tomcat/commit/fc42bbccb9041fafd194fbfdf3eab1d44cb5c45cWEB
- https://lists.apache.org/thread/trqq01bbxw6c92zx69kx2mw2qgmfy0o5WEB
- https://lists.debian.org/debian-lts-announce/2025/07/msg00009.htmlWEB
- https://nvd.nist.gov/vuln/detail/CVE-2025-52520ADVISORY
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