{"id":"CVE-2025-52520","aliases":["BIT-tomcat-2025-52520","GHSA-wr62-c79q-cv37"],"url":"https://o3.security/vulnerability/CVE-2025-52520","summary":"Apache Tomcat: DoS via integer overflow in multipart file upload","details":"For some unlikely configurations of multipart upload, an Integer Overflow vulnerability in Apache Tomcat could lead to a DoS via bypassing of size limits.\n\nThis 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.\nThe following versions were EOL at the time the CVE was created but are \nknown to be affected: 8.5.0 through 8.5.100. Other, older, EOL versions \nmay also be affected.\n\n\nUsers are recommended to upgrade to version 11.0.9, 10.1.43 or 9.0.107, which fix the issue.","published":"2025-07-10T19:05:41.637Z","modified":"2026-07-15T01:48:58.718935576Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":{"score":0.0196,"percentile":0.78347,"asOf":"2026-08-04"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-catalina","fixedVersion":"11.0.9"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-catalina","fixedVersion":"10.1.43"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-catalina","fixedVersion":"9.0.107"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-catalina","fixedVersion":null},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","fixedVersion":"11.0.9"},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","fixedVersion":"10.1.43"},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","fixedVersion":"9.0.107"},{"ecosystem":"Maven","name":"org.apache.tomcat.embed:tomcat-embed-core","fixedVersion":null}],"fix":null,"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2025/07/10/12"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/07/msg00009.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/52xxx/CVE-2025-52520.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/trqq01bbxw6c92zx69kx2mw2qgmfy0o5"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-52520"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:48:58.718935576Z"}}