{"id":"CVE-2026-73581","title":"Improper Check for Certificate Revocation vulnerability in Apache Tomcat","summary":"Improper Check for Certificate Revocation vulnerability in Apache Tomcat. Both the OpenSSL and OpenSSL-FFM TLS implementations ignore CRLs when certificate uses a keystore.\n\n\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","cwe":["CWE-299"],"vendor":"Apache Software Foundation","product":"Apache Tomcat","affected":["apache_tomcat >= 11.0.0-M1 <= 11.0.25","apache_tomcat >= 10.1.0-M1 <= 10.1.59","apache_tomcat >= 9.0.0.M1 <= 9.0.121","apache_tomcat >= 8.5.0 <= 8.50.100"],"published":"2026-09-23","updated":"2026-09-23","sourceUpdated":"2026-09-23T19:19:13.367","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-73581","references":[{"url":"https://lists.apache.org/thread/r0dj3h1pbn4wv96fhsfrnz3t6874t6do","label":"security@apache.org"},{"url":"http://www.openwall.com/lists/oss-security/2026/09/23/19","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-23T15:19:35.322766Z"},"ingestedAt":"2026-09-23T11:22:32.916Z","slug":"CVE-2026-73581","body":"## Overview\n\nImproper Check for Certificate Revocation vulnerability in Apache Tomcat. Both the OpenSSL and OpenSSL-FFM TLS implementations ignore CRLs when certificate uses a keystore.\n\n\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.58, from 9.0.0-M1 through 9.0.121.\n\n\n\nThe following versions were EOL at the time the CVE was created but are \nknown to be affected: from 8.5.0 through 8.5.100. Other unsupported versions may also be affected.\n\n\n\nUsers are recommended to upgrade to version 11.0.26, 10.1.59, 9.0.122, which fixes the issue.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":209761,"id":"CVE-2026-73581","ts":1790180879736,"field":"cvss","old":null,"new":"6.5"},{"seq":209760,"id":"CVE-2026-73581","ts":1790180879736,"field":"severity","old":"none","new":"medium"}]}