[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f8e5MKgCEkFldexCCOgnspMW5OLmLNz78enySxt_3oeM":3,"g5a-risk:CVE-2021-20701":120},{"success":4,"data":5,"meta":118},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":39,"epssPercentile":27,"epssTimeSeries":40,"severity":41,"affectedProducts":42,"affectedProductsCount":57,"references":58,"referencesCount":63,"weaknesses":64,"weaknessesCount":63,"isActivelyExploited":73,"cisaInfo":27,"otxData":27,"relatedBlogPosts":74,"seoMetadata":75,"configurations":100,"relatedVendorCves":116,"notableEvents":117},"CVE-2021-20701","What is CVE-2021-20701?","Buffer overflow vulnerability in the Disk Agent CLUSTERPRO X 4.3 for Windows and earlier, EXPRESSCLUSTER X 4.3 for Windows and earlier, CLUSTERPRO X 4.3 SingleServerSafe for Windows and earlier, EXPRESSCLUSTER X 4.3 SingleServerSafe for Windows and earlier allows attacker to remote code execution via a network.","Buffer overflow vulnerability in the Disk Agent CLUSTERPRO X 4.3 for Windows and earlier, EXPRESSCLUSTER X 4.3 for Windows and earlier, CLUSTERPRO X 4.3 Sing...","2021-11-03T00:15:07.71","2023-11-07T03:29:11.433",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":30,"CVSSMetricV40":27},[16],{"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,[31],{"Source":17,"Type":18,"CVSSData":32,"BaseSeverity":25,"ExploitabilityScore":37,"ImpactScore":38,"ACInsufInfo":27,"ObtainAllPrivilege":27,"ObtainUserPrivilege":27,"ObtainOtherPrivilege":27,"UserInteractionRequired":27},{"Version":33,"VectorString":34,"AccessVector":21,"AccessComplexity":22,"Authentication":23,"ConfidentialityImpact":35,"IntegrityImpact":35,"AvailabilityImpact":35,"BaseScore":36,"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:L\u002FAu:N\u002FC:P\u002FI:P\u002FA:P","PARTIAL",7.5,10,6.4,0.02142,[39,39,39,39,39,39,39],"Critical",[43,48,51,54],{"vendor":44,"product":45,"version":46,"criteria":47,"vulnerable":4},"nec","clusterpro_x","*","cpe:2.3:a:nec:clusterpro_x:*:*:*:*:*:windows:*:*",{"vendor":44,"product":49,"version":46,"criteria":50,"vulnerable":4},"clusterpro_x_singleserversafe","cpe:2.3:a:nec:clusterpro_x_singleserversafe:*:*:*:*:*:windows:*:*",{"vendor":44,"product":52,"version":46,"criteria":53,"vulnerable":4},"expresscluster_x","cpe:2.3:a:nec:expresscluster_x:*:*:*:*:*:windows:*:*",{"vendor":44,"product":55,"version":46,"criteria":56,"vulnerable":4},"expresscluster_x_singleserversafe","cpe:2.3:a:nec:expresscluster_x_singleserversafe:*:*:*:*:*:windows:*:*",4,[59],{"url":60,"source":61,"tags":62},"https:\u002F\u002Fjpn.nec.com\u002Fsecurity-info\u002Fsecinfo\u002Fnv21-015_en.html","Nec",[],1,[65],{"id":66,"name":67,"description":68,"extendedDescription":69,"status":70,"abstraction":71,"structure":72},"CWE-120","Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')","The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.","A buffer overflow condition exists when a product attempts to put more data in a buffer than it can hold, or when it attempts to put data in a memory area outside of the boundaries of a buffer. The simplest type of error, and the most common cause of buffer overflows, is the \"classic\" case in which the product copies the buffer without restricting how much is copied. Other variants exist, but the existence of a classic overflow strongly suggests that the programmer is not considering even the most basic of security protections.","Incomplete","Base","Simple",false,[],{"title":76,"metaDescription":77,"keywords":78,"canonicalUrl":79,"structuredData":80},"What is CVE-2021-20701? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2021-20701, a critical severity cyber security vulnerability from 2021. Buffer overflow vulnerability in the Disk Agent CLUSTER...","CVE-2021-20701, CVE-2021-20701 vulnerability, CVE-2021-20701 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, nec security, clusterpro_x vulnerability, clusterpro_x_singleserversafe vulnerability, expresscluster_x vulnerability, expresscluster_x_singleserversafe vulnerability","\u002Fwhat-is\u002Fcve-2021-20701",{"@context":81,"@type":82,"headline":76,"description":77,"datePublished":10,"dateModified":11,"author":83,"publisher":87,"about":91,"mainEntityOfPage":95,"articleSection":98,"keywords":99},"https:\u002F\u002Fschema.org","TechArticle",{"@type":84,"name":85,"url":86},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":84,"name":85,"url":86,"logo":88},{"@type":89,"url":90},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":92,"name":6,"description":93,"additionalType":94},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":96,"@id":97},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2021-20701","Cybersecurity","CVE-2021-20701, CVE-2021-20701 vulnerability, CVE-2021-20701 security, critical severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[101],{"Operator":27,"Negate":27,"Nodes":102},[103],{"Operator":104,"Negate":27,"CPEMatch":105},"OR",[106,110,112,114],{"Vulnerable":4,"Criteria":47,"MatchCriteriaID":107,"VersionStartExcluding":27,"VersionStartIncluding":108,"VersionEndExcluding":27,"VersionEndIncluding":109},"109DED36-3D51-4EDF-8187-63F3415BC2B7","1.0","4.3",{"Vulnerable":4,"Criteria":50,"MatchCriteriaID":111,"VersionStartExcluding":27,"VersionStartIncluding":108,"VersionEndExcluding":27,"VersionEndIncluding":109},"AADFE051-D950-4027-B9C4-EB53B3881001",{"Vulnerable":4,"Criteria":53,"MatchCriteriaID":113,"VersionStartExcluding":27,"VersionStartIncluding":108,"VersionEndExcluding":27,"VersionEndIncluding":109},"EBD9B299-1A5E-4329-BC51-606A0EF00822",{"Vulnerable":4,"Criteria":56,"MatchCriteriaID":115,"VersionStartExcluding":27,"VersionStartIncluding":108,"VersionEndExcluding":27,"VersionEndIncluding":109},"5717B4C8-9622-4A08-9E29-E6B66800CE99",[],[],{"lastModified":11,"cacheTime":119,"version":33},1792353303877,{"score":121,"band":122,"action":123,"scoredAt":124},55,"Medium","Plan remediation","2026-10-16T06:52:22.933799+00:00"]