[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fbGATjUwzgYbGlzmhTA5gH2OR9lTYNMyg9TUsU5havHI":3,"g5a-risk:CVE-2021-20709":155},{"success":4,"data":5,"meta":153},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":39,"epssPercentile":26,"epssTimeSeries":40,"severity":41,"affectedProducts":42,"affectedProductsCount":64,"references":65,"referencesCount":77,"weaknesses":78,"weaknessesCount":87,"isActivelyExploited":88,"cisaInfo":26,"otxData":26,"relatedBlogPosts":89,"seoMetadata":90,"configurations":115,"relatedVendorCves":151,"notableEvents":152},"CVE-2021-20709","What is CVE-2021-20709?","Improper validation of integrity check value vulnerability in NEC Aterm WF1200CR firmware Ver1.3.2 and earlier, Aterm WG1200CR firmware Ver1.3.3 and earlier, and Aterm WG2600HS firmware Ver1.5.1 and earlier allows an attacker with an administrative privilege to execute arbitrary OS commands by sending a specially crafted request to a specific URL.","Improper validation of integrity check value vulnerability in NEC Aterm WF1200CR firmware Ver1.3.2 and earlier, Aterm WG1200CR firmware Ver1.3.3 and earlier,...","2021-04-26T01:15:07.977","2021-05-05T20:02:07.637",7.2,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:H\u002FUI:N\u002FS:U\u002FC:H\u002FI:H\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":26,"CVSSMetricV2":29,"CVSSMetricV40":26},[16],{"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":24,"Scope":25,"ConfidentialityImpact":23,"IntegrityImpact":23,"AvailabilityImpact":23,"BaseScore":12,"BaseSeverity":23,"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","HIGH","NONE","UNCHANGED",null,1.2,5.9,[30],{"Source":17,"Type":18,"CVSSData":31,"BaseSeverity":23,"ExploitabilityScore":37,"ImpactScore":38,"ACInsufInfo":26,"ObtainAllPrivilege":26,"ObtainUserPrivilege":26,"ObtainOtherPrivilege":26,"UserInteractionRequired":26},{"Version":32,"VectorString":33,"AccessVector":21,"AccessComplexity":22,"Authentication":34,"ConfidentialityImpact":35,"IntegrityImpact":35,"AvailabilityImpact":35,"BaseScore":36,"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:C\u002FI:C\u002FA:C","SINGLE","COMPLETE",9,8,10,0.0066,[39,39,39,39,39,39,39],"High",[43,48,52,55,58,61],{"vendor":44,"product":45,"version":46,"criteria":47,"vulnerable":4},"nec","aterm_wf1200cr_firmware","*","cpe:2.3:o:nec:aterm_wf1200cr_firmware:*:*:*:*:*:*:*:*",{"vendor":44,"product":49,"version":50,"criteria":51,"vulnerable":4},"aterm_wf1200cr","-","cpe:2.3:h:nec:aterm_wf1200cr:-:*:*:*:*:*:*:*",{"vendor":44,"product":53,"version":46,"criteria":54,"vulnerable":4},"aterm_wg1200cr_firmware","cpe:2.3:o:nec:aterm_wg1200cr_firmware:*:*:*:*:*:*:*:*",{"vendor":44,"product":56,"version":50,"criteria":57,"vulnerable":4},"aterm_wg1200cr","cpe:2.3:h:nec:aterm_wg1200cr:-:*:*:*:*:*:*:*",{"vendor":44,"product":59,"version":46,"criteria":60,"vulnerable":4},"aterm_wg2600hs_firmware","cpe:2.3:o:nec:aterm_wg2600hs_firmware:*:*:*:*:*:*:*:*",{"vendor":44,"product":62,"version":50,"criteria":63,"vulnerable":4},"aterm_wg2600hs","cpe:2.3:h:nec:aterm_wg2600hs:-:*:*:*:*:*:*:*",6,[66,72],{"url":67,"source":68,"tags":69},"https:\u002F\u002Fjpn.nec.com\u002Fsecurity-info\u002Fsecinfo\u002Fnv21-010.html","Nec",[70,71],"Mitigation","Vendor Advisory",{"url":73,"source":74,"tags":75},"https:\u002F\u002Fjvn.jp\u002Fen\u002Fjp\u002FJVN29739718\u002Findex.html","Jvn",[76],"Third Party Advisory",2,[79],{"id":80,"name":81,"description":82,"extendedDescription":83,"status":84,"abstraction":85,"structure":86},"CWE-354","Improper Validation of Integrity Check Value","The product does not validate or incorrectly validates the integrity check values or \"checksums\" of a message. This may prevent it from detecting if the data has been modified or corrupted in transmission.","Improper validation of checksums before use results in an unnecessary risk that can easily be mitigated. The protocol specification describes the algorithm used for calculating the checksum. It is then a simple matter of implementing the calculation and verifying that the calculated checksum and the received checksum match. Improper verification of the calculated checksum and the received checksum can lead to far greater consequences.","Draft","Base","Simple",1,false,[],{"title":91,"metaDescription":92,"keywords":93,"canonicalUrl":94,"structuredData":95},"What is CVE-2021-20709? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2021-20709, a high severity cyber security vulnerability from 2021. 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