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Apple was aware of a report that this issue may have been actively exploited at the time of release..","A deserialization issue was addressed through improved validation. This issue is fixed in Security Update 2021-005 Catalina, iOS 12.5.5, iOS 14.8 and iPadOS ...","2021-08-24T19:15:24.967","2025-10-23T18:01:54.887",7.5,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:N\u002FS:U\u002FC:N\u002FI:H\u002FA:N",{"CVSSMetricV31":15,"CVSSMetricV30":33,"CVSSMetricV2":34,"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":23,"IntegrityImpact":25,"AvailabilityImpact":23,"BaseScore":12,"BaseSeverity":25,"ExploitCodeMaturity":26,"RemediationLevel":26,"ReportConfidence":26,"TemporalScore":26,"TemporalSeverity":26,"ConfidentialityRequirement":26,"IntegrityRequirement":26,"AvailabilityRequirement":26,"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},"134c704f-9b21-4f2e-91b3-4a467353bcc0","Secondary",{"Version":20,"VectorString":13,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":23,"IntegrityImpact":25,"AvailabilityImpact":23,"BaseScore":12,"BaseSeverity":25,"ExploitCodeMaturity":26,"RemediationLevel":26,"ReportConfidence":26,"TemporalScore":26,"TemporalSeverity":26,"ConfidentialityRequirement":26,"IntegrityRequirement":26,"AvailabilityRequirement":26,"ModifiedAttackVector":26,"ModifiedAttackComplexity":26,"ModifiedPrivilegesRequired":26,"ModifiedUserInteraction":26,"ModifiedScope":26,"ModifiedConfidentialityImpact":26,"ModifiedIntegrityImpact":26,"ModifiedAvailabilityImpact":26,"EnvironmentalScore":26,"EnvironmentalSeverity":26},[],[35],{"Source":17,"Type":18,"CVSSData":36,"BaseSeverity":42,"ExploitabilityScore":43,"ImpactScore":44,"ACInsufInfo":45,"ObtainAllPrivilege":45,"ObtainUserPrivilege":45,"ObtainOtherPrivilege":45,"UserInteractionRequired":45},{"Version":37,"VectorString":38,"AccessVector":21,"AccessComplexity":22,"Authentication":23,"ConfidentialityImpact":23,"IntegrityImpact":39,"AvailabilityImpact":23,"BaseScore":40,"BaseSeverity":41,"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:N\u002FI:P\u002FA:N","PARTIAL",5,"","MEDIUM",10,2.9,false,0.03673,[46,46,46,46,46,46,46],"High",[50,55,58,61,64,67],{"vendor":51,"product":52,"version":53,"criteria":54,"vulnerable":4},"apple","ipados","*","cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*",{"vendor":51,"product":56,"version":53,"criteria":57,"vulnerable":4},"iphone_os","cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*",{"vendor":51,"product":59,"version":53,"criteria":60,"vulnerable":4},"mac_os_x","cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*",{"vendor":51,"product":59,"version":62,"criteria":63,"vulnerable":4},"10.15.7","cpe:2.3:o:apple:mac_os_x:10.15.7:-:*:*:*:*:*:*",{"vendor":51,"product":65,"version":53,"criteria":66,"vulnerable":4},"macos","cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*",{"vendor":51,"product":68,"version":53,"criteria":69,"vulnerable":4},"watchos","cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*",6,[72,77,80,83,86,89,91,93,95,97,99],{"url":73,"source":74,"tags":75},"https:\u002F\u002Fsupport.apple.com\u002Fen-us\u002FHT212804","Apple",[76],"Vendor Advisory",{"url":78,"source":74,"tags":79},"https:\u002F\u002Fsupport.apple.com\u002Fen-us\u002FHT212805",[76],{"url":81,"source":74,"tags":82},"https:\u002F\u002Fsupport.apple.com\u002Fen-us\u002FHT212806",[76],{"url":84,"source":74,"tags":85},"https:\u002F\u002Fsupport.apple.com\u002Fen-us\u002FHT212807",[76],{"url":87,"source":74,"tags":88},"https:\u002F\u002Fsupport.apple.com\u002Fen-us\u002FHT212824",[76],{"url":73,"source":74,"tags":90},[76],{"url":78,"source":74,"tags":92},[76],{"url":81,"source":74,"tags":94},[76],{"url":84,"source":74,"tags":96},[76],{"url":87,"source":74,"tags":98},[76],{"url":100,"source":101,"tags":102},"https:\u002F\u002Fwww.cisa.gov\u002Fknown-exploited-vulnerabilities-catalog?field_cve=CVE-2021-31010","CISA",[103],"US Government Resource",11,[106],{"id":107,"name":108,"description":109,"extendedDescription":110,"status":111,"abstraction":112,"structure":113},"CWE-502","Deserialization of Untrusted Data","The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid.","It is often convenient to serialize objects for communication or to save them for later use. However, deserialized data or code can often be modified without using the provided accessor functions if it does not use cryptography to protect itself. Furthermore, any cryptography would still be client-side security -- which is a dangerous security assumption.\nData that is untrusted can not be trusted to be well-formed.\nWhen developers place no restrictions on \"gadget chains,\" or series of instances and method invocations that can self-execute during the deserialization process (i.e., before the object is returned to the caller), it is sometimes possible for attackers to leverage them to perform unauthorized actions, like generating a shell.","Draft","Base","Simple",1,{"shortDescription":41,"requiredAction":41,"vulnerabilityName":41,"dateAdded":26},[],{"title":118,"metaDescription":119,"keywords":120,"canonicalUrl":121,"structuredData":122},"What is CVE-2021-31010? 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