[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fPQNP-giSi-G3LerZ5G3TvZtcSJ_UG9TBQwrRGiHgAfA":3,"g5a-risk:CVE-2021-21540":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":48,"epssPercentile":26,"epssTimeSeries":49,"severity":50,"affectedProducts":51,"affectedProductsCount":57,"references":58,"referencesCount":57,"weaknesses":64,"weaknessesCount":78,"isActivelyExploited":79,"cisaInfo":26,"otxData":26,"relatedBlogPosts":80,"seoMetadata":81,"configurations":106,"relatedVendorCves":115,"notableEvents":116},"CVE-2021-21540","What is CVE-2021-21540?","Dell EMC iDRAC9 versions prior to 4.40.00.00 contain a stack-based overflow vulnerability. A remote authenticated attacker could potentially exploit this vulnerability to overwrite configuration information by injecting arbitrarily large payload.","Dell EMC iDRAC9 versions prior to 4.40.00.00 contain a stack-based overflow vulnerability. A remote authenticated attacker could potentially exploit this vul...","2021-04-30T21:15:08.74","2022-10-24T18:21:03.637",8.1,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:L\u002FUI:N\u002FS:U\u002FC:N\u002FI:H\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":26,"CVSSMetricV2":38,"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":22,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":23,"IntegrityImpact":25,"AvailabilityImpact":25,"BaseScore":12,"BaseSeverity":25,"ExploitCodeMaturity":26,"RemediationLevel":26,"ReportConfidence":26,"TemporalScore":26,"TemporalSeverity":26,"ConfidentialityRequirement":26,"IntegrityRequirement":26,"AvailabilityRequirement":25,"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,2.8,5.2,{"Source":30,"Type":31,"CVSSData":32,"ExploitabilityScore":36,"ImpactScore":37},"security_alert@emc.com","Secondary",{"Version":20,"VectorString":33,"AttackVector":21,"AttackComplexity":25,"PrivilegesRequired":22,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":23,"IntegrityImpact":25,"AvailabilityImpact":22,"BaseScore":34,"BaseSeverity":35,"ExploitCodeMaturity":26,"RemediationLevel":26,"ReportConfidence":26,"TemporalScore":26,"TemporalSeverity":26,"ConfidentialityRequirement":26,"IntegrityRequirement":26,"AvailabilityRequirement":22,"ModifiedAttackVector":26,"ModifiedAttackComplexity":26,"ModifiedPrivilegesRequired":26,"ModifiedUserInteraction":26,"ModifiedScope":26,"ModifiedConfidentialityImpact":26,"ModifiedIntegrityImpact":26,"ModifiedAvailabilityImpact":26,"EnvironmentalScore":26,"EnvironmentalSeverity":26},"CVSS:3.1\u002FAV:N\u002FAC:H\u002FPR:L\u002FUI:N\u002FS:U\u002FC:N\u002FI:H\u002FA:L",5.9,"MEDIUM",1.6,4.2,[39],{"Source":17,"Type":18,"CVSSData":40,"BaseSeverity":35,"ExploitabilityScore":46,"ImpactScore":47,"ACInsufInfo":26,"ObtainAllPrivilege":26,"ObtainUserPrivilege":26,"ObtainOtherPrivilege":26,"UserInteractionRequired":26},{"Version":41,"VectorString":42,"AccessVector":21,"AccessComplexity":22,"Authentication":43,"ConfidentialityImpact":23,"IntegrityImpact":44,"AvailabilityImpact":44,"BaseScore":45,"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:S\u002FC:N\u002FI:P\u002FA:P","SINGLE","PARTIAL",5.5,8,4.9,0.01155,[48,48,48,48,48,48,48],"High",[52],{"vendor":53,"product":54,"version":55,"criteria":56,"vulnerable":4},"dell","idrac9_firmware","*","cpe:2.3:o:dell:idrac9_firmware:*:*:*:*:*:*:*:*",1,[59],{"url":60,"source":61,"tags":62},"https:\u002F\u002Fwww.dell.com\u002Fsupport\u002Fkbdoc\u002F000185293","Dell",[63],"Vendor Advisory",[65,73],{"id":66,"name":67,"description":68,"extendedDescription":69,"status":70,"abstraction":71,"structure":72},"CWE-787","Out-of-bounds Write","The product writes data past the end, or before the beginning, of the intended buffer.","","Draft","Base","Simple",{"id":74,"name":75,"description":76,"extendedDescription":69,"status":70,"abstraction":77,"structure":72},"CWE-121","Stack-based Buffer Overflow","A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).","Variant",2,false,[],{"title":82,"metaDescription":83,"keywords":84,"canonicalUrl":85,"structuredData":86},"What is CVE-2021-21540? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2021-21540, a high severity cyber security vulnerability from 2021. Dell EMC iDRAC9 versions prior to 4.40.00.00 contain a stac...","CVE-2021-21540, CVE-2021-21540 vulnerability, CVE-2021-21540 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, dell security, idrac9_firmware vulnerability","\u002Fwhat-is\u002Fcve-2021-21540",{"@context":87,"@type":88,"headline":82,"description":83,"datePublished":10,"dateModified":11,"author":89,"publisher":93,"about":97,"mainEntityOfPage":101,"articleSection":104,"keywords":105},"https:\u002F\u002Fschema.org","TechArticle",{"@type":90,"name":91,"url":92},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":90,"name":91,"url":92,"logo":94},{"@type":95,"url":96},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":98,"name":6,"description":99,"additionalType":100},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":102,"@id":103},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2021-21540","Cybersecurity","CVE-2021-21540, CVE-2021-21540 vulnerability, CVE-2021-21540 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[107],{"Operator":26,"Negate":26,"Nodes":108},[109],{"Operator":110,"Negate":26,"CPEMatch":111},"OR",[112],{"Vulnerable":4,"Criteria":56,"MatchCriteriaID":113,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":114,"VersionEndIncluding":26},"5E9ED974-1468-4B8B-B82E-5E0340C2601B","4.40.00.00",[],[],{"lastModified":11,"cacheTime":118,"version":41},1792450391356,{"score":120,"band":121,"action":122,"scoredAt":123},46,"Medium","Plan remediation","2026-10-16T06:51:02.300307+00:00"]