[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f4G5lHBPKBJi3xZB3EyIrZWqPaSyV-YeTIMuTE-eUH7o":3,"g5a-risk:CVE-2021-34580":119},{"success":4,"data":5,"meta":117},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":43,"epssPercentile":26,"epssTimeSeries":44,"severity":45,"affectedProducts":46,"affectedProductsCount":55,"references":56,"referencesCount":62,"weaknesses":63,"weaknessesCount":55,"isActivelyExploited":77,"cisaInfo":26,"otxData":26,"relatedBlogPosts":78,"seoMetadata":79,"configurations":104,"relatedVendorCves":115,"notableEvents":116},"CVE-2021-34580","What is CVE-2021-34580?","In mymbCONNECT24, mbCONNECT24 \u003C= 2.9.0 an unauthenticated user can enumerate valid backend users by checking what kind of response the server sends for crafted invalid login attempts.","In mymbCONNECT24, mbCONNECT24 \u003C= 2.9.0 an unauthenticated user can enumerate valid backend users by checking what kind of response the server sends for craft...","2021-10-27T11:15:07.553","2021-11-01T17:37:16.693",7.5,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:H\u002FI:N\u002FA:N",{"CVSSMetricV31":15,"CVSSMetricV30":26,"CVSSMetricV2":33,"CVSSMetricV40":26},[16,29],{"Source":17,"Type":18,"CVSSData":19,"ExploitabilityScore":27,"ImpactScore":28},"nvd@nist.gov","Primary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":25,"IntegrityImpact":23,"AvailabilityImpact":23,"BaseScore":12,"BaseSeverity":25,"ExploitCodeMaturity":26,"RemediationLevel":26,"ReportConfidence":26,"TemporalScore":26,"TemporalSeverity":26,"ConfidentialityRequirement":26,"IntegrityRequirement":26,"AvailabilityRequirement":23,"ModifiedAttackVector":26,"ModifiedAttackComplexity":26,"ModifiedPrivilegesRequired":26,"ModifiedUserInteraction":26,"ModifiedScope":26,"ModifiedConfidentialityImpact":26,"ModifiedIntegrityImpact":26,"ModifiedAvailabilityImpact":26,"EnvironmentalScore":26,"EnvironmentalSeverity":26},"3.1","NETWORK","LOW","NONE","UNCHANGED","HIGH",null,3.9,3.6,{"Source":30,"Type":31,"CVSSData":32,"ExploitabilityScore":27,"ImpactScore":28},"info@cert.vde.com","Secondary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":25,"IntegrityImpact":23,"AvailabilityImpact":23,"BaseScore":12,"BaseSeverity":25,"ExploitCodeMaturity":26,"RemediationLevel":26,"ReportConfidence":26,"TemporalScore":26,"TemporalSeverity":26,"ConfidentialityRequirement":26,"IntegrityRequirement":26,"AvailabilityRequirement":23,"ModifiedAttackVector":26,"ModifiedAttackComplexity":26,"ModifiedPrivilegesRequired":26,"ModifiedUserInteraction":26,"ModifiedScope":26,"ModifiedConfidentialityImpact":26,"ModifiedIntegrityImpact":26,"ModifiedAvailabilityImpact":26,"EnvironmentalScore":26,"EnvironmentalSeverity":26},[34],{"Source":17,"Type":18,"CVSSData":35,"BaseSeverity":40,"ExploitabilityScore":41,"ImpactScore":42,"ACInsufInfo":26,"ObtainAllPrivilege":26,"ObtainUserPrivilege":26,"ObtainOtherPrivilege":26,"UserInteractionRequired":26},{"Version":36,"VectorString":37,"AccessVector":21,"AccessComplexity":22,"Authentication":23,"ConfidentialityImpact":38,"IntegrityImpact":23,"AvailabilityImpact":23,"BaseScore":39,"BaseSeverity":26,"Exploitability":26,"RemediationLevel":26,"ReportConfidence":26,"TemporalScore":26,"CollateralDamagePotential":26,"TargetDistribution":26,"ConfidentialityRequirement":26,"IntegrityRequirement":26,"AvailabilityRequirement":26,"EnvironmentalScore":26},"2.0","AV:N\u002FAC:L\u002FAu:N\u002FC:P\u002FI:N\u002FA:N","PARTIAL",5,"MEDIUM",10,2.9,0.01039,[43,43,43,43,43,43,43],"High",[47,52],{"vendor":48,"product":49,"version":50,"criteria":51,"vulnerable":4},"mbconnectline","mbconnect24","*","cpe:2.3:a:mbconnectline:mbconnect24:*:*:*:*:*:*:*:*",{"vendor":48,"product":53,"version":50,"criteria":54,"vulnerable":4},"mymbconnect24","cpe:2.3:a:mbconnectline:mymbconnect24:*:*:*:*:*:*:*:*",2,[57],{"url":58,"source":59,"tags":60},"https:\u002F\u002Fcert.vde.com\u002Fen\u002Fadvisories\u002FVDE-2021-037\u002F","Vde",[61],"Third Party Advisory",1,[64,72],{"id":65,"name":66,"description":67,"extendedDescription":68,"status":69,"abstraction":70,"structure":71},"CWE-203","Observable Discrepancy","The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.","Discrepancies can take many forms, and variations may be detectable in timing, control flow, communications such as replies or requests, or general behavior. These discrepancies can reveal information about the product's operation or internal state to an unauthorized actor. In some cases, discrepancies can be used by attackers to form a side channel.","Incomplete","Base","Simple",{"id":73,"name":74,"description":75,"extendedDescription":76,"status":69,"abstraction":70,"structure":71},"CWE-204","Observable Response Discrepancy","The product provides different responses to incoming requests in a way that reveals internal state information to an unauthorized actor outside of the intended control sphere.","This issue frequently occurs during authentication, where a difference in failed-login messages could allow an attacker to determine if the username is valid or not. These exposures can be inadvertent (bug) or intentional (design).",false,[],{"title":80,"metaDescription":81,"keywords":82,"canonicalUrl":83,"structuredData":84},"What is CVE-2021-34580? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2021-34580, a high severity cyber security vulnerability from 2021. In mymbCONNECT24, mbCONNECT24 \u003C= 2.9.0 an unauthenticated u...","CVE-2021-34580, CVE-2021-34580 vulnerability, CVE-2021-34580 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2021, CVSS score, exploit, patch, remediation, mbconnectline security, mbconnect24 vulnerability, mymbconnect24 vulnerability","\u002Fwhat-is\u002Fcve-2021-34580",{"@context":85,"@type":86,"headline":80,"description":81,"datePublished":10,"dateModified":11,"author":87,"publisher":91,"about":95,"mainEntityOfPage":99,"articleSection":102,"keywords":103},"https:\u002F\u002Fschema.org","TechArticle",{"@type":88,"name":89,"url":90},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":88,"name":89,"url":90,"logo":92},{"@type":93,"url":94},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":96,"name":6,"description":97,"additionalType":98},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":100,"@id":101},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2021-34580","Cybersecurity","CVE-2021-34580, CVE-2021-34580 vulnerability, CVE-2021-34580 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[105],{"Operator":26,"Negate":26,"Nodes":106},[107],{"Operator":108,"Negate":26,"CPEMatch":109},"OR",[110,113],{"Vulnerable":4,"Criteria":51,"MatchCriteriaID":111,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":112},"C6FA138E-7298-488C-91CB-27A3AE49AA3C","2.9.0",{"Vulnerable":4,"Criteria":54,"MatchCriteriaID":114,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":112},"6149BB15-4765-4412-A071-C7880A52E3B3",[],[],{"lastModified":11,"cacheTime":118,"version":36},1792383632573,{"score":120,"band":121,"action":122,"scoredAt":123},46,"Medium","Plan remediation","2026-10-16T06:52:19.680259+00:00"]