{"id":"CVE-2025-52434","published":"2025-07-10T19:03:47Z","modified":"2025-11-04T21:11:38Z","title":"Apache Tomcat: APR/Native Connector crash leading to DoS","vendor":"Apache","product":"Apache Tomcat","tier":"tail","description":{"text":"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.\n\nThis issue affects Apache Tomcat: 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 9.0.107, which fixes the issue.","provenance":"source","from":"CVE.org"},"cvss":{"score":7.5,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","provenance":"source","from":"CISA ADP Vulnrichment"},"epss":{"score":0.02074,"percentile":0.81391,"provenance":"source"},"cwes":[{"id":"CWE-362","name":"Concurrent Execution using Shared Resource with Improper Synchronization"}],"references":[{"url":"https://lists.apache.org/thread/gxgh65004f25y8519coth6w7vchww030","tags":["vendor-advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2025/07/msg00009.html","tags":[]},{"url":"http://www.openwall.com/lists/oss-security/2025/07/10/11","tags":[]}],"priority":{"score":21.5,"factors":[{"name":"EPSS percentile","points":16.28},{"name":"CVSS severity","points":5.25}]},"vendorSlug":"apache","affectedVersions":[{"vendor":"Apache Software Foundation","product":"Apache Tomcat","versions":[">= 9.0.0.M1, <= 9.0.106",">= 8.5.0, <= 8.5.100"]}],"affected":[{"ecosystem":"Maven","package":"org.apache.tomcat:tomcat-coyote","vulnerableRanges":[">=9.0.0.M1, <9.0.107",">=8.5.0, <=8.5.100"],"patched":["9.0.107"],"from":["GHSA-4j3c-42xv-3f84"],"provenance":"source"},{"ecosystem":"Maven","package":"org.apache.tomcat.embed:tomcat-embed-core","vulnerableRanges":[">=9.0.0.M1, <9.0.107",">=8.5.0, <=8.5.100"],"patched":["9.0.107"],"from":["GHSA-4j3c-42xv-3f84"],"provenance":"source"}],"euvd":{"id":"EUVD-2025-21045","exploited":false,"provenance":"source"},"lineage":{"packageHistory":[{"cve":"CVE-2019-0199","published":"2019-04-10","fixed":"9.0.16","kev":false},{"cve":"CVE-2024-21733","published":"2024-01-19","fixed":"9.0.44","kev":false},{"cve":"CVE-2023-42794","published":"2023-10-10","fixed":"9.0.81","kev":false},{"cve":"CVE-2025-52434","published":"2025-07-10","fixed":"9.0.107","kev":false},{"cve":"CVE-2020-17527","published":"2020-12-03","fixed":"10.0.0-M10","kev":false},{"cve":"CVE-2020-13934","published":"2020-07-14","fixed":"10.0.0-M6","kev":false},{"cve":"CVE-2020-13943","published":"2020-10-12","fixed":"10.0.0-M8","kev":false},{"cve":"CVE-2025-31650","published":"2025-04-28","fixed":"11.0.6","kev":false,"link":{"from":"CVE-2025-31650","to":"CVE-2025-52434","relation":"successor","confidence":"low","kind":"sequence","evidence":[{"kind":"version-step","provenance":"source","package":"Maven:org.apache.tomcat:tomcat-coyote","fromFixed":"9.0.104","toFixed":"9.0.107","daysApart":73}]}}],"package":"Maven:org.apache.tomcat:tomcat-coyote"}}