[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fanrvCt4wv3KT2DmQrtsoPjp69p1nMm1GPKB08fs7Img":3,"g5a-risk:CVE-2021-40284":124},{"success":4,"data":5,"meta":122},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":40,"epssPercentile":27,"epssTimeSeries":41,"severity":42,"affectedProducts":43,"affectedProductsCount":56,"references":57,"referencesCount":67,"weaknesses":68,"weaknessesCount":77,"isActivelyExploited":78,"cisaInfo":27,"otxData":27,"relatedBlogPosts":79,"seoMetadata":80,"configurations":105,"relatedVendorCves":120,"notableEvents":121},"CVE-2021-40284","What is CVE-2021-40284?","D-Link DSL-3782 EU v1.01:EU v1.03 is affected by a buffer overflow which can cause a denial of service. This vulnerability exists in the web interface \"\u002Fcgi-bin\u002FNew_GUI\u002FIgmp.asp\". Authenticated remote attackers can trigger this vulnerability by sending a long string in parameter 'igmpsnoopEnable' via an HTTP request.","D-Link DSL-3782 EU v1.01:EU v1.03 is affected by a buffer overflow which can cause a denial of service. This vulnerability exists in the web interface \"\u002Fcgi-...","2021-09-09T17:15:07.287","2021-09-22T15:16:00.573",6.5,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:L\u002FUI:N\u002FS:U\u002FC:N\u002FI:N\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":22,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":23,"IntegrityImpact":23,"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","MEDIUM",null,2.8,3.6,[31],{"Source":17,"Type":18,"CVSSData":32,"BaseSeverity":26,"ExploitabilityScore":38,"ImpactScore":39,"ACInsufInfo":27,"ObtainAllPrivilege":27,"ObtainUserPrivilege":27,"ObtainOtherPrivilege":27,"UserInteractionRequired":27},{"Version":33,"VectorString":34,"AccessVector":21,"AccessComplexity":22,"Authentication":35,"ConfidentialityImpact":23,"IntegrityImpact":23,"AvailabilityImpact":36,"BaseScore":37,"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:S\u002FC:N\u002FI:N\u002FA:C","SINGLE","COMPLETE",6.8,8,6.9,0.0263,[40,40,40,40,40,40,40],"Medium",[44,49,52],{"vendor":45,"product":46,"version":47,"criteria":48,"vulnerable":4},"dlink","dsl-3782_firmware","eu_1.01","cpe:2.3:o:dlink:dsl-3782_firmware:eu_1.01:*:*:*:*:*:*:*",{"vendor":45,"product":46,"version":50,"criteria":51,"vulnerable":4},"eu_1.03","cpe:2.3:o:dlink:dsl-3782_firmware:eu_1.03:*:*:*:*:*:*:*",{"vendor":45,"product":53,"version":54,"criteria":55,"vulnerable":4},"dsl-3782","-","cpe:2.3:h:dlink:dsl-3782:-:*:*:*:*:*:*:*",3,[58,64],{"url":59,"source":60,"tags":61},"https:\u002F\u002Fsupportannouncement.us.dlink.com\u002Fannouncement\u002Fpublication.aspx?name=SAP10245","Dlink",[62,63],"Patch","Vendor Advisory",{"url":65,"source":60,"tags":66},"https:\u002F\u002Fwww.dlink.com\u002Fen\u002Fsecurity-bulletin\u002F",[63],2,[69],{"id":70,"name":71,"description":72,"extendedDescription":73,"status":74,"abstraction":75,"structure":76},"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",1,false,[],{"title":81,"metaDescription":82,"keywords":83,"canonicalUrl":84,"structuredData":85},"What is CVE-2021-40284? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2021-40284, a medium severity cyber security vulnerability from 2021. D-Link DSL-3782 EU v1.01:EU v1.03 is affected by a buffer...","CVE-2021-40284, CVE-2021-40284 vulnerability, CVE-2021-40284 security, medium severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2021, CVSS score, exploit, patch, remediation, dlink security, dsl-3782_firmware vulnerability, dsl-3782 vulnerability","\u002Fwhat-is\u002Fcve-2021-40284",{"@context":86,"@type":87,"headline":81,"description":82,"datePublished":10,"dateModified":11,"author":88,"publisher":92,"about":96,"mainEntityOfPage":100,"articleSection":103,"keywords":104},"https:\u002F\u002Fschema.org","TechArticle",{"@type":89,"name":90,"url":91},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":89,"name":90,"url":91,"logo":93},{"@type":94,"url":95},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":97,"name":6,"description":98,"additionalType":99},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":101,"@id":102},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2021-40284","Cybersecurity","CVE-2021-40284, CVE-2021-40284 vulnerability, CVE-2021-40284 security, medium severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[106],{"Operator":107,"Negate":27,"Nodes":108},"AND",[109,116],{"Operator":110,"Negate":27,"CPEMatch":111},"OR",[112,114],{"Vulnerable":4,"Criteria":48,"MatchCriteriaID":113,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"93FE0ED2-5072-4BA1-9B4A-AD60BAC5A7E0",{"Vulnerable":4,"Criteria":51,"MatchCriteriaID":115,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"C97588BE-77A1-40A1-BC6E-5DAD0536C198",{"Operator":110,"Negate":27,"CPEMatch":117},[118],{"Vulnerable":27,"Criteria":55,"MatchCriteriaID":119,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"7F8D1900-34CB-45D3-8DF3-503E10B75E5B",[],[],{"lastModified":11,"cacheTime":123,"version":33},1792271070682,{"score":125,"band":126,"action":127,"scoredAt":128},25,"Low","Monitor","2026-10-16T06:52:02.068793+00:00"]