{"id":"CVE-2021-25329","published":"2021-03-01T12:00:20Z","modified":"2026-10-08T21:03:14Z","title":"Incomplete fix for CVE-2020-9484","vendor":"Apache","product":"Apache Tomcat","tier":"tail","description":{"text":"The fix for CVE-2020-9484 was incomplete. When using Apache Tomcat 10.0.0-M1 to 10.0.0, 9.0.0.M1 to 9.0.41, 8.5.0 to 8.5.61 or 7.0.0. to 7.0.107 with a configuration edge case that was highly unlikely to be used, the Tomcat instance was still vulnerable to CVE-2020-9494. Note that both the previously published prerequisites for CVE-2020-9484 and the previously published mitigations for CVE-2020-9484 also apply to this issue.","provenance":"source","from":"CVE.org"},"cvss":null,"epss":{"score":0.09491,"percentile":0.9544,"provenance":"source"},"cwes":[],"references":[{"url":"https://lists.apache.org/thread.html/rfe62fbf9d4c314f166fe8c668e50e5d9dd882a99447f26f0367474bf%40%3Cannounce.tomcat.apache.org%3E","tags":["x_refsource_MISC"]},{"url":"https://lists.apache.org/thread.html/rfe62fbf9d4c314f166fe8c668e50e5d9dd882a99447f26f0367474bf%40%3Cdev.tomcat.apache.org%3E","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://lists.apache.org/thread.html/rfe62fbf9d4c314f166fe8c668e50e5d9dd882a99447f26f0367474bf%40%3Cannounce.apache.org%3E","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://lists.apache.org/thread.html/rfe62fbf9d4c314f166fe8c668e50e5d9dd882a99447f26f0367474bf%40%3Cusers.tomcat.apache.org%3E","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://lists.apache.org/thread.html/rf6d5d57b114678d8898005faef31e9fd6d7c981fcc4ccfc3bc272fc9%40%3Cdev.tomcat.apache.org%3E","tags":["mailing-list","x_refsource_MLIST"]},{"url":"http://www.openwall.com/lists/oss-security/2021/03/01/2","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://lists.debian.org/debian-lts-announce/2021/03/msg00018.html","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://www.debian.org/security/2021/dsa-4891","tags":["vendor-advisory","x_refsource_DEBIAN"]},{"url":"https://lists.apache.org/thread.html/r8a2ac0e476dbfc1e6440b09dcc782d444ad635d6da26f0284725a5dc%40%3Cusers.tomcat.apache.org%3E","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://lists.apache.org/thread.html/rb51ccd58b2152fc75125b2406fc93e04ca9d34e737263faa6ff0f41f%40%3Cusers.tomcat.apache.org%3E","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://lists.apache.org/thread.html/r732b2ca289dc02df2de820e8775559abd6c207f159e39f559547a085%40%3Cusers.tomcat.apache.org%3E","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://lists.apache.org/thread.html/r11ce01e8a4c7269b88f88212f21830edf73558997ac7744f37769b77%40%3Cusers.tomcat.apache.org%3E","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://www.oracle.com//security-alerts/cpujul2021.html","tags":["x_refsource_MISC"]},{"url":"https://security.netapp.com/advisory/ntap-20210409-0002/","tags":["x_refsource_CONFIRM"]},{"url":"https://www.oracle.com/security-alerts/cpuoct2021.html","tags":["x_refsource_MISC"]},{"url":"https://www.oracle.com/security-alerts/cpujan2022.html","tags":["x_refsource_MISC"]},{"url":"https://security.gentoo.org/glsa/202208-34","tags":["vendor-advisory","x_refsource_GENTOO"]}],"priority":{"score":19.1,"factors":[{"name":"EPSS percentile","points":19.09}]},"vendorSlug":"apache","affectedVersions":[{"vendor":"Apache Software Foundation","product":"Apache Tomcat","versions":[">= Apache Tomcat 10, < 10.0.0",">= Apache Tomcat 9, < 9.0.41",">= Apache Tomcat 8.5, < 8.5.61",">= Apache Tomcat 7, < 7.0.107"]}],"affected":[{"ecosystem":"Maven","package":"org.apache.tomcat.embed:tomcat-embed-core","vulnerableRanges":[">=10.0.0-M1, <10.0.2",">=9.0.0, <9.0.41",">=8.0.0, <8.5.61",">=7.0.0, <7.0.108"],"patched":["10.0.2","9.0.41","8.5.61","7.0.108"],"from":["GHSA-jgwr-3qm3-26f3"],"provenance":"source"}],"euvd":{"id":"EUVD-2021-0677","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-apache-traffic-server-cve-2009-2693","parents":[{"from":"CVE-2020-9484","to":"CVE-2021-25329","relation":"incomplete-fix","confidence":"high","kind":"lineage","evidence":[{"kind":"text","provenance":"source","relation":"incomplete-fix","quote":"The fix for CVE-2020-9484 was incomplete.","from":"CVE.org","in":"CVE-2021-25329"}]},{"from":"CVE-2020-9494","to":"CVE-2021-25329","relation":"incomplete-fix","confidence":"high","kind":"lineage","evidence":[{"kind":"text","provenance":"source","relation":"incomplete-fix","quote":"When using Apache Tomcat 10.0.0-M1 to 10.0.0, 9.0.0.M1 to 9.0.41, 8.5.0 to 8.5.61 or 7.0.0. to 7.0.107 with a configuration edge case that was highly unlikely to be used, the Tomcat instance was still vulnerable to CVE-2020-9494.","from":"CVE.org","in":"CVE-2021-25329"}]}],"packageHistory":[{"cve":"CVE-2021-24122","published":"2021-01-14","fixed":"10.0.0-M10","kev":false,"link":{"from":"CVE-2021-24122","to":"CVE-2021-25329","relation":"successor","confidence":"low","kind":"sequence","evidence":[{"kind":"version-step","provenance":"source","package":"Maven:org.apache.tomcat.embed:tomcat-embed-core","fromFixed":"8.5.60","toFixed":"8.5.61","daysApart":46},{"kind":"version-step","provenance":"source","package":"Maven:org.apache.tomcat.embed:tomcat-embed-core","fromFixed":"9.0.40","toFixed":"9.0.41","daysApart":46}]}},{"cve":"CVE-2020-11996","published":"2020-06-26","fixed":"10.0.0-M5","kev":false,"link":{"from":"CVE-2020-11996","to":"CVE-2021-25329","relation":"successor","confidence":"low","kind":"sequence","evidence":[{"kind":"version-step","provenance":"source","package":"Maven:org.apache.tomcat.embed:tomcat-embed-core","fromFixed":"10.0.0-M5","toFixed":"10.0.2","daysApart":248}]}},{"cve":"CVE-2020-9484","published":"2020-05-20","fixed":"10.0.0-M5","kev":false},{"cve":"CVE-2021-25122","published":"2021-03-01","fixed":"10.0.2","kev":false,"link":{"from":"CVE-2021-25329","to":"CVE-2021-25122","relation":"successor","confidence":"low","kind":"sequence","orderedBy":"description","evidence":[{"kind":"version-step","provenance":"source","package":"Maven:org.apache.tomcat.embed:tomcat-embed-core","fromFixed":"8.5.61","toFixed":"8.5.63","daysApart":0},{"kind":"version-step","provenance":"source","package":"Maven:org.apache.tomcat.embed:tomcat-embed-core","fromFixed":"9.0.41","toFixed":"9.0.43","daysApart":0}]}},{"cve":"CVE-2021-25329","published":"2021-03-01","fixed":"10.0.2","kev":false},{"cve":"CVE-2022-42252","published":"2022-11-01","fixed":"10.1.1","kev":false},{"cve":"CVE-2022-45143","published":"2023-01-03","fixed":"10.1.2","kev":false},{"cve":"CVE-2023-41080","published":"2023-08-25","fixed":"11.0.0-M11","kev":false}],"package":"Maven:org.apache.tomcat.embed:tomcat-embed-core"}}