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Unsupported versions may also be affected.\n\n\n\nUsers are recommended to upgrade to version 2.0.16 or 1.3.9, which fixes the issue.","Race condition within a thread vulnerability in Apache Tomcat Native allowed client certificate verification requirements to be down-graded for some configur...","2026-09-23T13:17:31.237","2026-10-06T13:46:49.633",7.4,"CVSS:3.1\u002FAV:N\u002FAC:H\u002FPR:N\u002FUI:N\u002FS:U\u002FC:H\u002FI:H\u002FA:N",{"CVSSMetricV31":15,"CVSSMetricV30":28,"CVSSMetricV2":29,"CVSSMetricV40":30},[16],{"Source":17,"Type":18,"CVSSData":19,"ExploitabilityScore":26,"ImpactScore":27},"134c704f-9b21-4f2e-91b3-4a467353bcc0","Secondary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":22,"IntegrityImpact":22,"AvailabilityImpact":23,"BaseScore":12,"BaseSeverity":22,"ExploitCodeMaturity":25,"RemediationLevel":25,"ReportConfidence":25,"TemporalScore":25,"TemporalSeverity":25,"ConfidentialityRequirement":25,"IntegrityRequirement":25,"AvailabilityRequirement":25,"ModifiedAttackVector":25,"ModifiedAttackComplexity":25,"ModifiedPrivilegesRequired":25,"ModifiedUserInteraction":25,"ModifiedScope":25,"ModifiedConfidentialityImpact":25,"ModifiedIntegrityImpact":25,"ModifiedAvailabilityImpact":25,"EnvironmentalScore":25,"EnvironmentalSeverity":25},"3.1","NETWORK","HIGH","NONE","UNCHANGED",null,2.2,5.2,[],[],[],0.00202,[33,33,33,33,31,31,31],0.00216,"High",[36],{"vendor":37,"product":38,"version":39,"criteria":40,"vulnerable":4},"apache","tomcat_native","*","cpe:2.3:a:apache:tomcat_native:*:*:*:*:*:*:*:*",1,[43,48],{"url":44,"source":45,"tags":46},"https:\u002F\u002Flists.apache.org\u002Fthread\u002Fobsson6zhvfg0wsp2bx602l61ltj87r1","Apache",[47],"Vendor Advisory",{"url":49,"source":50,"tags":51},"http:\u002F\u002Fwww.openwall.com\u002Flists\u002Foss-security\u002F2026\u002F09\u002F23\u002F33","Openwall",[52,53],"Mailing List","Third Party Advisory",2,[56],{"id":57,"name":58,"description":59,"extendedDescription":60,"status":61,"abstraction":62,"structure":63},"CWE-366","Race Condition within a Thread","If two threads of execution use a resource simultaneously, there exists the possibility that resources may be used while invalid, in turn making the state of execution undefined.","","Draft","Base","Simple",false,[],{"title":67,"metaDescription":68,"keywords":69,"canonicalUrl":70,"structuredData":71},"What is CVE-2026-86247? Vulnerability Analysis | Security Advisory | EdgeProtect","Comprehensive analysis of CVE-2026-86247, a high severity cyber security vulnerability from 2026. 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