[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fFkyykMjFVZ8-kmSIAG6bogWXjjB3oDXFjM1TKANCXXI":3,"g5a-risk:CVE-2021-34746":129},{"success":4,"data":5,"meta":127},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":44,"epssPercentile":27,"epssTimeSeries":45,"severity":46,"affectedProducts":47,"affectedProductsCount":53,"references":54,"referencesCount":66,"weaknesses":67,"weaknessesCount":66,"isActivelyExploited":82,"cisaInfo":27,"otxData":27,"relatedBlogPosts":83,"seoMetadata":84,"configurations":109,"relatedVendorCves":118,"notableEvents":119},"CVE-2021-34746","What is CVE-2021-34746?","A vulnerability in the TACACS+ authentication, authorization and accounting (AAA) feature of Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow an unauthenticated, remote attacker to bypass authentication and log in to an affected device as an administrator. This vulnerability is due to incomplete validation of user-supplied input that is passed to an authentication script. An attacker could exploit this vulnerability by injecting parameters into an authentication request. A successful exploit could allow the attacker to bypass authentication and log in as an administrator to the affected device.","A vulnerability in the TACACS+ authentication, authorization and accounting (AAA) feature of Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow...","2021-09-02T03:15:06.687","2023-11-07T03:36:17.353",9.8,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:H\u002FI:H\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":27,"CVSSMetricV2":34,"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":25,"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},"d1c1063e-7a18-46af-9102-31f8928bc633","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":25,"ModifiedAttackVector":27,"ModifiedAttackComplexity":27,"ModifiedPrivilegesRequired":27,"ModifiedUserInteraction":27,"ModifiedScope":27,"ModifiedConfidentialityImpact":27,"ModifiedIntegrityImpact":27,"ModifiedAvailabilityImpact":27,"EnvironmentalScore":27,"EnvironmentalSeverity":27},[35],{"Source":17,"Type":18,"CVSSData":36,"BaseSeverity":25,"ExploitabilityScore":42,"ImpactScore":43,"ACInsufInfo":27,"ObtainAllPrivilege":27,"ObtainUserPrivilege":27,"ObtainOtherPrivilege":27,"UserInteractionRequired":27},{"Version":37,"VectorString":38,"AccessVector":21,"AccessComplexity":39,"Authentication":23,"ConfidentialityImpact":40,"IntegrityImpact":40,"AvailabilityImpact":40,"BaseScore":41,"BaseSeverity":27,"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:M\u002FAu:N\u002FC:C\u002FI:C\u002FA:C","MEDIUM","COMPLETE",9.3,8.6,10,0.17661,[44,44,44,44,44,44,44],"Critical",[48],{"vendor":49,"product":50,"version":51,"criteria":52,"vulnerable":4},"cisco","enterprise_nfv_infrastructure_software","*","cpe:2.3:a:cisco:enterprise_nfv_infrastructure_software:*:*:*:*:*:*:*:*",1,[55,61],{"url":56,"source":57,"tags":58},"https:\u002F\u002Fgithub.com\u002Forangecertcc\u002Fsecurity-research\u002Fsecurity\u002Fadvisories\u002FGHSA-gqx8-c4xr-c664","GitHub",[59,60],"Exploit","Third Party Advisory",{"url":62,"source":63,"tags":64},"https:\u002F\u002Ftools.cisco.com\u002Fsecurity\u002Fcenter\u002Fcontent\u002FCiscoSecurityAdvisory\u002Fcisco-sa-nfvis-g2DMVVh","Cisco",[65],"Vendor Advisory",2,[68,76],{"id":69,"name":70,"description":71,"extendedDescription":72,"status":73,"abstraction":74,"structure":75},"CWE-287","Improper Authentication","When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.","","Draft","Class","Simple",{"id":77,"name":78,"description":79,"extendedDescription":72,"status":80,"abstraction":81,"structure":75},"CWE-289","Authentication Bypass by Alternate Name","The product performs authentication based on the name of a resource being accessed, or the name of the actor performing the access, but it does not properly check all possible names for that resource or actor.","Incomplete","Base",false,[],{"title":85,"metaDescription":86,"keywords":87,"canonicalUrl":88,"structuredData":89},"What is CVE-2021-34746? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2021-34746, a critical severity cyber security vulnerability from 2021. A vulnerability in the TACACS+ authentication, authoriz...","CVE-2021-34746, CVE-2021-34746 vulnerability, CVE-2021-34746 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, cisco security, enterprise_nfv_infrastructure_software vulnerability","\u002Fwhat-is\u002Fcve-2021-34746",{"@context":90,"@type":91,"headline":85,"description":86,"datePublished":10,"dateModified":11,"author":92,"publisher":96,"about":100,"mainEntityOfPage":104,"articleSection":107,"keywords":108},"https:\u002F\u002Fschema.org","TechArticle",{"@type":93,"name":94,"url":95},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":93,"name":94,"url":95,"logo":97},{"@type":98,"url":99},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":101,"name":6,"description":102,"additionalType":103},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":105,"@id":106},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2021-34746","Cybersecurity","CVE-2021-34746, CVE-2021-34746 vulnerability, CVE-2021-34746 security, critical severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[110],{"Operator":27,"Negate":27,"Nodes":111},[112],{"Operator":113,"Negate":27,"CPEMatch":114},"OR",[115],{"Vulnerable":4,"Criteria":52,"MatchCriteriaID":116,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":117,"VersionEndIncluding":27},"B0593B05-4708-452B-A274-981D292C347D","4.6.1",[],[120],{"id":121,"eventType":122,"eventTime":123,"details":124,"label":125,"color":126},"5078cb6c-da2f-434e-9c48-c02745e32307","HIGH_EPSS_DELTA","2026-06-16T04:05:37.436589+00:00","Daily EPSS score increased by 0.100 on 2023-12-30","EPSS Score Increased","red",{"lastModified":11,"cacheTime":128,"version":37},1792371387936,{"score":130,"band":131,"action":132,"scoredAt":133},56,"Medium","Plan remediation","2026-10-16T06:51:58.586119+00:00"]