[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f4N2VREncFOPFZoRTy2GXkw2gplMyXR0nrJ2kS_lH3yg":3,"g5a-risk:CVE-2021-42013":319},{"success":4,"data":5,"meta":317},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":46,"epssPercentile":27,"epssTimeSeries":47,"severity":48,"affectedProducts":49,"affectedProductsCount":43,"references":89,"referencesCount":237,"weaknesses":238,"weaknessesCount":247,"isActivelyExploited":4,"cisaInfo":248,"otxData":27,"relatedBlogPosts":249,"seoMetadata":250,"configurations":275,"relatedVendorCves":315,"notableEvents":316},"CVE-2021-42013","What is CVE-2021-42013?","It was found that the fix for CVE-2021-41773 in Apache HTTP Server 2.4.50 was insufficient. An attacker could use a path traversal attack to map URLs to files outside the directories configured by Alias-like directives. If files outside of these directories are not protected by the usual default configuration \"require all denied\", these requests can succeed. If CGI scripts are also enabled for these aliased pathes, this could allow for remote code execution. This issue only affects Apache 2.4.49 and Apache 2.4.50 and not earlier versions.","It was found that the fix for CVE-2021-41773 in Apache HTTP Server 2.4.50 was insufficient. An attacker could use a path traversal attack to map URLs to file...","2021-10-07T16:15:09.27","2025-10-27T17:36:49.387",9.8,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:H\u002FI:H\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":34,"CVSSMetricV2":35,"CVSSMetricV40":27},[16,30],{"Source":17,"Type":18,"CVSSData":19,"ExploitabilityScore":28,"ImpactScore":29},"nvd@nist.gov","Primary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":25,"IntegrityImpact":25,"AvailabilityImpact":25,"BaseScore":12,"BaseSeverity":26,"ExploitCodeMaturity":27,"RemediationLevel":27,"ReportConfidence":27,"TemporalScore":27,"TemporalSeverity":27,"ConfidentialityRequirement":27,"IntegrityRequirement":27,"AvailabilityRequirement":27,"ModifiedAttackVector":27,"ModifiedAttackComplexity":27,"ModifiedPrivilegesRequired":27,"ModifiedUserInteraction":27,"ModifiedScope":27,"ModifiedConfidentialityImpact":27,"ModifiedIntegrityImpact":27,"ModifiedAvailabilityImpact":27,"EnvironmentalScore":27,"EnvironmentalSeverity":27},"3.1","NETWORK","LOW","NONE","UNCHANGED","HIGH","CRITICAL",null,3.9,5.9,{"Source":31,"Type":32,"CVSSData":33,"ExploitabilityScore":28,"ImpactScore":29},"134c704f-9b21-4f2e-91b3-4a467353bcc0","Secondary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":25,"IntegrityImpact":25,"AvailabilityImpact":25,"BaseScore":12,"BaseSeverity":26,"ExploitCodeMaturity":27,"RemediationLevel":27,"ReportConfidence":27,"TemporalScore":27,"TemporalSeverity":27,"ConfidentialityRequirement":27,"IntegrityRequirement":27,"AvailabilityRequirement":27,"ModifiedAttackVector":27,"ModifiedAttackComplexity":27,"ModifiedPrivilegesRequired":27,"ModifiedUserInteraction":27,"ModifiedScope":27,"ModifiedConfidentialityImpact":27,"ModifiedIntegrityImpact":27,"ModifiedAvailabilityImpact":27,"EnvironmentalScore":27,"EnvironmentalSeverity":27},[],[36],{"Source":17,"Type":18,"CVSSData":37,"BaseSeverity":25,"ExploitabilityScore":43,"ImpactScore":44,"ACInsufInfo":45,"ObtainAllPrivilege":45,"ObtainUserPrivilege":45,"ObtainOtherPrivilege":45,"UserInteractionRequired":45},{"Version":38,"VectorString":39,"AccessVector":21,"AccessComplexity":22,"Authentication":23,"ConfidentialityImpact":40,"IntegrityImpact":40,"AvailabilityImpact":40,"BaseScore":41,"BaseSeverity":42,"Exploitability":27,"RemediationLevel":27,"ReportConfidence":27,"TemporalScore":27,"CollateralDamagePotential":27,"TargetDistribution":27,"ConfidentialityRequirement":27,"IntegrityRequirement":27,"AvailabilityRequirement":27,"EnvironmentalScore":27},"2.0","AV:N\u002FAC:L\u002FAu:N\u002FC:P\u002FI:P\u002FA:P","PARTIAL",7.5,"",10,6.4,false,0.99964,[46,46,46,46,46,46,46],"Critical",[50,55,58,63,66,71,74,77,81,84],{"vendor":51,"product":52,"version":53,"criteria":54,"vulnerable":4},"apache","http_server","2.4.49","cpe:2.3:a:apache:http_server:2.4.49:*:*:*:*:*:*:*",{"vendor":51,"product":52,"version":56,"criteria":57,"vulnerable":4},"2.4.50","cpe:2.3:a:apache:http_server:2.4.50:*:*:*:*:*:*:*",{"vendor":59,"product":60,"version":61,"criteria":62,"vulnerable":4},"fedoraproject","fedora","34","cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",{"vendor":59,"product":60,"version":64,"criteria":65,"vulnerable":4},"35","cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*",{"vendor":67,"product":68,"version":69,"criteria":70,"vulnerable":4},"oracle","instantis_enterprisetrack","17.1","cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:*:*:*:*:*:*:*",{"vendor":67,"product":68,"version":72,"criteria":73,"vulnerable":4},"17.2","cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:*:*:*:*:*:*:*",{"vendor":67,"product":68,"version":75,"criteria":76,"vulnerable":4},"17.3","cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:*:*:*:*:*:*:*",{"vendor":67,"product":78,"version":79,"criteria":80,"vulnerable":4},"jd_edwards_enterpriseone_tools","*","cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools:*:*:*:*:*:*:*:*",{"vendor":67,"product":82,"version":79,"criteria":83,"vulnerable":4},"secure_backup","cpe:2.3:a:oracle:secure_backup:*:*:*:*:*:*:*:*",{"vendor":85,"product":86,"version":87,"criteria":88,"vulnerable":4},"netapp","cloud_backup","-","cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*",[90,95,101,104,107,110,113,116,121,124,127,130,133,136,139,142,145,148,151,157,161,164,167,171,174,178,182,186,190,193,197,199,201,203,205,207,209,211,213,215,217,219,221,223,225,227,229,231,233,235],{"url":91,"source":92,"tags":93},"http:\u002F\u002Fjvn.jp\u002Fen\u002Fjp\u002FJVN51106450\u002Findex.html","Jvn",[94],"Third 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Limitation of a Pathname to a Restricted Directory ('Path Traversal')","The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.","Many file operations are intended to take place within a restricted directory. By using special elements such as \"..\" and \"\u002F\" separators, attackers can escape outside of the restricted location to access files or directories that are elsewhere on the system. One of the most common special elements is the \"..\u002F\" sequence, which in most modern operating systems is interpreted as the parent directory of the current location. This is referred to as relative path traversal. Path traversal also covers the use of absolute pathnames such as \"\u002Fusr\u002Flocal\u002Fbin\" to access unexpected files. This is referred to as absolute path traversal.","Stable","Base","Simple",1,{"shortDescription":42,"requiredAction":42,"vulnerabilityName":42,"dateAdded":27},[],{"title":251,"metaDescription":252,"keywords":253,"canonicalUrl":254,"structuredData":255},"What is CVE-2021-42013? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2021-42013, a critical severity cyber security vulnerability from 2021. High exploit probability (100.0%). It was found that th...","CVE-2021-42013, CVE-2021-42013 vulnerability, CVE-2021-42013 security, critical severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2021, CVSS score, exploit, patch, remediation, apache security, fedoraproject security, oracle security, netapp security, http_server vulnerability, fedora vulnerability, instantis_enterprisetrack vulnerability, jd_edwards_enterpriseone_tools vulnerability","\u002Fwhat-is\u002Fcve-2021-42013",{"@context":256,"@type":257,"headline":251,"description":252,"datePublished":10,"dateModified":11,"author":258,"publisher":262,"about":266,"mainEntityOfPage":270,"articleSection":273,"keywords":274},"https:\u002F\u002Fschema.org","TechArticle",{"@type":259,"name":260,"url":261},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":259,"name":260,"url":261,"logo":263},{"@type":264,"url":265},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":267,"name":6,"description":268,"additionalType":269},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":271,"@id":272},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2021-42013","Cybersecurity","CVE-2021-42013, CVE-2021-42013 vulnerability, CVE-2021-42013 security, critical severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[276,285,293,309],{"Operator":27,"Negate":27,"Nodes":277},[278],{"Operator":279,"Negate":45,"CPEMatch":280},"OR",[281,283],{"Vulnerable":4,"Criteria":54,"MatchCriteriaID":282,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"B201CFB2-F626-4DD0-9F6A-DFE8F64203E2",{"Vulnerable":4,"Criteria":57,"MatchCriteriaID":284,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"F7E0AFD3-D661-4631-86AB-D26F12083D1C",{"Operator":27,"Negate":27,"Nodes":286},[287],{"Operator":279,"Negate":45,"CPEMatch":288},[289,291],{"Vulnerable":4,"Criteria":62,"MatchCriteriaID":290,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"A930E247-0B43-43CB-98FF-6CE7B8189835",{"Vulnerable":4,"Criteria":65,"MatchCriteriaID":292,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"80E516C0-98A4-4ADE-B69F-66A772E2BAAA",{"Operator":27,"Negate":27,"Nodes":294},[295],{"Operator":279,"Negate":45,"CPEMatch":296},[297,299,301,303,306],{"Vulnerable":4,"Criteria":70,"MatchCriteriaID":298,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"82EA4BA7-C38B-4AF3-8914-9E3D089EBDD4",{"Vulnerable":4,"Criteria":73,"MatchCriteriaID":300,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"B9C9BC66-FA5F-4774-9BDA-7AB88E2839C4",{"Vulnerable":4,"Criteria":76,"MatchCriteriaID":302,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"7F69B9A5-F21B-4904-9F27-95C0F7A628E3",{"Vulnerable":4,"Criteria":80,"MatchCriteriaID":304,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":305,"VersionEndIncluding":27},"86305E47-33E9-411C-B932-08C395C09982","9.2.6.0",{"Vulnerable":4,"Criteria":83,"MatchCriteriaID":307,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":308,"VersionEndIncluding":27},"C01E8B82-71C7-4A4A-A70A-7B147524AB4A","18.1.0.1.0",{"Operator":27,"Negate":27,"Nodes":310},[311],{"Operator":279,"Negate":45,"CPEMatch":312},[313],{"Vulnerable":4,"Criteria":88,"MatchCriteriaID":314,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"5C2089EE-5D7F-47EC-8EA5-0F69790564C4",[],[],{"lastModified":11,"cacheTime":318,"version":38},1792245680391,{"score":320,"band":48,"action":321,"scoredAt":322},90,"Emergency patch","2026-10-16T06:52:12.509046+00:00"]