{"id":"CVE-2026-86246","title":"Initialization of a resource with an insecure default vulnerability in Apache Tomcat Native enabled insecure options by default  including ALLOW_CLIENT_RENEGOTIATION, NO_EXTENDED_MASTER_SECRET, IGNORE_UNEXPECTED_EOF and ALLOW_NO_DHE_KEX.…","summary":"Initialization of a resource with an insecure default vulnerability in Apache Tomcat Native enabled insecure options by default  including ALLOW_CLIENT_RENEGOTIATION, NO_EXTENDED_MASTER_SECRET, IGNORE_UNEXPECTED_EOF and ALLOW_NO_DHE_KEX.…","severity":"critical","cvss":9.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","cwe":["CWE-1188"],"vendor":"apache","product":"tomcat_native","affected":["tomcat_native >= 1.3.0, < 1.3.9","tomcat_native >= 2.0.0, < 2.0.16"],"patched":["tomcat_native 2.0.16"],"published":"2026-09-23","updated":"2026-10-06","sourceUpdated":"2026-10-06T13:50:57.873","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86246","references":[{"url":"https://lists.apache.org/thread/dgyvfwb24nbk45ptvlhdyhdhl5o7k5ol","label":"security@apache.org"},{"url":"http://www.openwall.com/lists/oss-security/2026/09/23/32","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd","cve.org"],"epss":0.00347,"epssPercentile":0.28119,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-09-23T15:29:46.583140Z"},"ingestedAt":"2026-09-23T13:24:43.399Z","slug":"CVE-2026-86246","body":"## Overview\n\nInitialization of a resource with an insecure default vulnerability in Apache Tomcat Native enabled insecure options by default  including ALLOW_CLIENT_RENEGOTIATION, NO_EXTENDED_MASTER_SECRET, IGNORE_UNEXPECTED_EOF and ALLOW_NO_DHE_KEX.\n\n\n\nThis issue affects Apache Tomcat Native: from 2.0.0 through 2.0.15, from 1.3.0 through 1.3.8. Earlier unsupported versions may also be affected.\n\n\n\nUsers are recommended to upgrade to version 2.0.16 or 1.3.9, which fix the issue.\n\n## Affected\n\n- `tomcat_native >= 1.3.0, < 1.3.9`\n- `tomcat_native >= 2.0.0, < 2.0.16`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `tomcat_native 2.0.16`","depth":"midnight","depthScore":50,"depthScoreParts":{"impact":50.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":209773,"id":"CVE-2026-86246","ts":1790180880362,"field":"cvss","old":null,"new":"9.1"},{"seq":209772,"id":"CVE-2026-86246","ts":1790180880362,"field":"severity","old":"none","new":"critical"}]}