[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fcYBFx5VMOSswwD7sXGzi5O6YBgbponXIvGJOHjvFbdU":3,"g5a-risk:CVE-2020-9859":143},{"success":4,"data":5,"meta":141},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":45,"epssPercentile":26,"epssTimeSeries":46,"severity":47,"affectedProducts":48,"affectedProductsCount":66,"references":67,"referencesCount":81,"weaknesses":82,"weaknessesCount":91,"isActivelyExploited":4,"cisaInfo":92,"otxData":26,"relatedBlogPosts":93,"seoMetadata":94,"configurations":119,"relatedVendorCves":139,"notableEvents":140},"CVE-2020-9859","What is CVE-2020-9859?","A memory consumption issue was addressed with improved memory handling. This issue is fixed in iOS 13.5.1 and iPadOS 13.5.1, macOS Catalina 10.15.5 Supplemental Update, tvOS 13.4.6, watchOS 6.2.6. An application may be able to execute arbitrary code with kernel privileges.","A memory consumption issue was addressed with improved memory handling. This issue is fixed in iOS 13.5.1 and iPadOS 13.5.1, macOS Catalina 10.15.5 Supplemen...","2020-06-05T15:15:11.097","2025-10-23T18:04:53.3",7.8,"CVSS:3.1\u002FAV:L\u002FAC:L\u002FPR:L\u002FUI:N\u002FS:U\u002FC:H\u002FI:H\u002FA:H",{"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":22,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":25,"IntegrityImpact":25,"AvailabilityImpact":25,"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","LOCAL","LOW","NONE","UNCHANGED","HIGH",null,1.8,5.9,{"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":22,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":25,"IntegrityImpact":25,"AvailabilityImpact":25,"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":25,"ExploitabilityScore":42,"ImpactScore":43,"ACInsufInfo":44,"ObtainAllPrivilege":44,"ObtainUserPrivilege":44,"ObtainOtherPrivilege":44,"UserInteractionRequired":44},{"Version":37,"VectorString":38,"AccessVector":21,"AccessComplexity":22,"Authentication":23,"ConfidentialityImpact":39,"IntegrityImpact":39,"AvailabilityImpact":39,"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:L\u002FAC:L\u002FAu:N\u002FC:C\u002FI:C\u002FA:C","COMPLETE",7.2,"",3.9,10,false,0.00829,[45,45,45,45,45,45,45],"High",[49,54,57,60,63],{"vendor":50,"product":51,"version":52,"criteria":53,"vulnerable":4},"apple","ipados","*","cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*",{"vendor":50,"product":55,"version":52,"criteria":56,"vulnerable":4},"iphone_os","cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*",{"vendor":50,"product":58,"version":52,"criteria":59,"vulnerable":4},"mac_os_x","cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*",{"vendor":50,"product":61,"version":52,"criteria":62,"vulnerable":4},"tvos","cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*",{"vendor":50,"product":64,"version":52,"criteria":65,"vulnerable":4},"watchos","cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*",5,[68,74,76],{"url":69,"source":70,"tags":71},"https:\u002F\u002Fsupport.apple.com\u002FHT211214","Apple",[72,73],"Release Notes","Vendor Advisory",{"url":69,"source":70,"tags":75},[72,73],{"url":77,"source":78,"tags":79},"https:\u002F\u002Fwww.cisa.gov\u002Fknown-exploited-vulnerabilities-catalog?field_cve=CVE-2020-9859","CISA",[80],"US Government Resource",3,[83],{"id":84,"name":85,"description":86,"extendedDescription":87,"status":88,"abstraction":89,"structure":90},"CWE-415","Double Free","The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.","When a program calls free() twice with the same argument, the program's memory management data structures become corrupted. This corruption can cause the program to crash or, in some circumstances, cause two later calls to malloc() to return the same pointer. If malloc() returns the same value twice and the program later gives the attacker control over the data that is written into this doubly-allocated memory, the program becomes vulnerable to a buffer overflow attack.","Draft","Variant","Simple",1,{"shortDescription":41,"requiredAction":41,"vulnerabilityName":41,"dateAdded":26},[],{"title":95,"metaDescription":96,"keywords":97,"canonicalUrl":98,"structuredData":99},"What is CVE-2020-9859? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2020-9859, a high severity cyber security vulnerability from 2020. A memory consumption issue was addressed with improved memor...","CVE-2020-9859, CVE-2020-9859 vulnerability, CVE-2020-9859 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2020, CVSS score, exploit, patch, remediation, apple security, ipados vulnerability, iphone_os vulnerability, mac_os_x vulnerability, tvos vulnerability, watchos vulnerability","\u002Fwhat-is\u002Fcve-2020-9859",{"@context":100,"@type":101,"headline":95,"description":96,"datePublished":10,"dateModified":11,"author":102,"publisher":106,"about":110,"mainEntityOfPage":114,"articleSection":117,"keywords":118},"https:\u002F\u002Fschema.org","TechArticle",{"@type":103,"name":104,"url":105},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":103,"name":104,"url":105,"logo":107},{"@type":108,"url":109},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":111,"name":6,"description":112,"additionalType":113},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":115,"@id":116},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2020-9859","Cybersecurity","CVE-2020-9859, CVE-2020-9859 vulnerability, CVE-2020-9859 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[120],{"Operator":26,"Negate":26,"Nodes":121},[122],{"Operator":123,"Negate":44,"CPEMatch":124},"OR",[125,128,130,133,136],{"Vulnerable":4,"Criteria":53,"MatchCriteriaID":126,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":127,"VersionEndIncluding":26},"CDFF3251-4C9B-405D-8503-8CE07506D0FB","13.5.1",{"Vulnerable":4,"Criteria":56,"MatchCriteriaID":129,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":127,"VersionEndIncluding":26},"7F2B7D88-D736-4349-BC37-784A7F7EEF2F",{"Vulnerable":4,"Criteria":59,"MatchCriteriaID":131,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":132,"VersionEndIncluding":26},"99973242-A249-4C34-B042-5F833AE73708","10.15.5",{"Vulnerable":4,"Criteria":62,"MatchCriteriaID":134,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":135,"VersionEndIncluding":26},"A80F48C2-A93D-4A14-AC15-67286C512CCF","13.4.6",{"Vulnerable":4,"Criteria":65,"MatchCriteriaID":137,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":138,"VersionEndIncluding":26},"EB3938AE-A4F3-40EE-84D6-26CDE46CA151","6.2.6",[],[],{"lastModified":11,"cacheTime":142,"version":37},1792347459675,{"score":144,"band":47,"action":145,"scoredAt":146},74,"Emergency patch","2026-10-16T06:48:44.749463+00:00"]