[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fylnxrxqPoE093vkeZ3Pxz8EPaqRrCwiKpFaxz6qelAY":3,"g5a-risk:CVE-2021-21843":144},{"success":4,"data":5,"meta":142},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":47,"epssPercentile":27,"epssTimeSeries":48,"severity":49,"affectedProducts":50,"affectedProductsCount":63,"references":64,"referencesCount":63,"weaknesses":79,"weaknessesCount":96,"isActivelyExploited":97,"cisaInfo":27,"otxData":27,"relatedBlogPosts":98,"seoMetadata":99,"configurations":124,"relatedVendorCves":140,"notableEvents":141},"CVE-2021-21843","What is CVE-2021-21843?","Multiple exploitable integer overflow vulnerabilities exist within the MPEG-4 decoding functionality of the GPAC Project on Advanced Content library v1.0.1. A specially crafted MPEG-4 input can cause an integer overflow due to unchecked arithmetic resulting in a heap-based buffer overflow that causes memory corruption. After validating the number of ranges, at [41] the library will multiply the count by the size of the GF_SubsegmentRangeInfo structure. On a 32-bit platform, this multiplication can result in an integer overflow causing the space of the array being allocated to be less than expected. An attacker can convince a user to open a video to trigger this vulnerability.","Multiple exploitable integer overflow vulnerabilities exist within the MPEG-4 decoding functionality of the GPAC Project on Advanced Content library v1.0.1. ...","2021-08-18T13:15:07.673","2022-07-29T14:07:56.697",8.8,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:R\u002FS:U\u002FC:H\u002FI:H\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":30,"CVSSMetricV2":37,"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":24,"Scope":25,"ConfidentialityImpact":26,"IntegrityImpact":26,"AvailabilityImpact":26,"BaseScore":12,"BaseSeverity":26,"ExploitCodeMaturity":27,"RemediationLevel":27,"ReportConfidence":27,"TemporalScore":27,"TemporalSeverity":27,"ConfidentialityRequirement":27,"IntegrityRequirement":27,"AvailabilityRequirement":26,"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","REQUIRED","UNCHANGED","HIGH",null,2.8,5.9,[31],{"Source":32,"Type":33,"CVSSData":34,"ExploitabilityScore":28,"ImpactScore":29},"talos-cna@cisco.com","Secondary",{"Version":35,"VectorString":36,"AttackVector":21,"AttackComplexity":22,"PrivilegesRequired":23,"UserInteraction":24,"Scope":25,"ConfidentialityImpact":26,"IntegrityImpact":26,"AvailabilityImpact":26,"BaseScore":12,"BaseSeverity":26,"ExploitCodeMaturity":27,"RemediationLevel":27,"ReportConfidence":27,"TemporalScore":27,"TemporalSeverity":27,"ConfidentialityRequirement":27,"IntegrityRequirement":27,"AvailabilityRequirement":27,"ModifiedAttackVector":27,"ModifiedAttackComplexity":27,"ModifiedPrivilegesRequired":27,"ModifiedUserInteraction":27,"ModifiedScope":27,"ModifiedConfidentialityImpact":27,"ModifiedIntegrityImpact":27,"ModifiedAvailabilityImpact":27,"EnvironmentalScore":27,"EnvironmentalSeverity":27},"3.0","CVSS:3.0\u002FAV:N\u002FAC:L\u002FPR:N\u002FUI:R\u002FS:U\u002FC:H\u002FI:H\u002FA:H",[38],{"Source":17,"Type":18,"CVSSData":39,"BaseSeverity":42,"ExploitabilityScore":45,"ImpactScore":46,"ACInsufInfo":27,"ObtainAllPrivilege":27,"ObtainUserPrivilege":27,"ObtainOtherPrivilege":27,"UserInteractionRequired":4},{"Version":40,"VectorString":41,"AccessVector":21,"AccessComplexity":42,"Authentication":23,"ConfidentialityImpact":43,"IntegrityImpact":43,"AvailabilityImpact":43,"BaseScore":44,"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:M\u002FAu:N\u002FC:P\u002FI:P\u002FA:P","MEDIUM","PARTIAL",6.8,8.6,6.4,0.0201,[47,47,47,47,47,47,47],"High",[51,55,60],{"vendor":52,"product":52,"version":53,"criteria":54,"vulnerable":4},"gpac","1.0.1","cpe:2.3:a:gpac:gpac:1.0.1:*:*:*:*:*:*:*",{"vendor":56,"product":57,"version":58,"criteria":59,"vulnerable":4},"debian","debian_linux","10.0","cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",{"vendor":56,"product":57,"version":61,"criteria":62,"vulnerable":4},"11.0","cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",3,[65,72,76],{"url":66,"source":67,"tags":68},"https:\u002F\u002Ftalosintelligence.com\u002Fvulnerability_reports\u002FTALOS-2021-1297","Talosintelligence",[69,70,71],"Exploit","Technical Description","Third Party Advisory",{"url":73,"source":74,"tags":75},"https:\u002F\u002Fwww.debian.org\u002Fsecurity\u002F2021\u002Fdsa-4966","Debian",[71],{"url":77,"source":67,"tags":78},"https:\u002F\u002Fwww.talosintelligence.com\u002Fvulnerability_reports\u002FTALOS-2021-1297",[69,70,71],[80,88],{"id":81,"name":82,"description":83,"extendedDescription":84,"status":85,"abstraction":86,"structure":87},"CWE-119","Improper Restriction of Operations within the Bounds of a Memory Buffer","The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.","Certain languages allow direct addressing of memory locations and do not automatically ensure that these locations are valid for the memory buffer that is being referenced. This can cause read or write operations to be performed on memory locations that may be associated with other variables, data structures, or internal program data.","Stable","Class","Simple",{"id":89,"name":90,"description":91,"extendedDescription":92,"status":93,"abstraction":94,"structure":95},"CWE-680","Integer Overflow to Buffer Overflow","The product performs a calculation to determine how much memory to allocate, but an integer overflow can occur that causes less memory to be allocated than expected, leading to a buffer overflow.","","Draft","Compound","Chain",2,false,[],{"title":100,"metaDescription":101,"keywords":102,"canonicalUrl":103,"structuredData":104},"What is CVE-2021-21843? Vulnerability Analysis | Security Advisory | EdgeProtect","Comprehensive analysis of CVE-2021-21843, a high severity cyber security vulnerability from 2021. Multiple exploitable integer overflow vulnerabilities exist...","CVE-2021-21843, CVE-2021-21843 vulnerability, CVE-2021-21843 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2021, CVSS score, exploit, patch, remediation, gpac security, debian security, gpac vulnerability, debian_linux vulnerability","\u002Fwhat-is\u002Fcve-2021-21843",{"@context":105,"@type":106,"headline":100,"description":101,"datePublished":10,"dateModified":11,"author":107,"publisher":111,"about":115,"mainEntityOfPage":119,"articleSection":122,"keywords":123},"https:\u002F\u002Fschema.org","TechArticle",{"@type":108,"name":109,"url":110},"Organization","EdgeProtect","https:\u002F\u002Fedgeprotect.io",{"@type":108,"name":109,"url":110,"logo":112},{"@type":113,"url":114},"ImageObject","https:\u002F\u002Fedgeprotect.io\u002Fimg\u002Flogos\u002Fedgeprotect-logo-512.png",{"@type":116,"name":6,"description":117,"additionalType":118},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":120,"@id":121},"WebPage","https:\u002F\u002Fedgeprotect.io\u002Fwhat-is\u002Fcve-2021-21843","Cybersecurity","CVE-2021-21843, CVE-2021-21843 vulnerability, CVE-2021-21843 security, high severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[125,132],{"Operator":27,"Negate":27,"Nodes":126},[127],{"Operator":128,"Negate":27,"CPEMatch":129},"OR",[130],{"Vulnerable":4,"Criteria":54,"MatchCriteriaID":131,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"82DD2D40-0A05-48FD-940D-32B4D8B51AB3",{"Operator":27,"Negate":27,"Nodes":133},[134],{"Operator":128,"Negate":27,"CPEMatch":135},[136,138],{"Vulnerable":4,"Criteria":59,"MatchCriteriaID":137,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",{"Vulnerable":4,"Criteria":62,"MatchCriteriaID":139,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"FA6FEEC2-9F11-4643-8827-749718254FED",[],[],{"lastModified":11,"cacheTime":143,"version":40},1793226673739,{"score":145,"band":146,"action":147,"scoredAt":148},53,"Medium","Plan remediation","2026-10-28T06:51:40.404936+00:00"]