[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fUKnf3H2WcuPMC8IhweLIynrXYcUy8Di8UMGvw8b7Wqo":3,"g5a-risk:CVE-2021-31615":108},{"success":4,"data":5,"meta":106},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":38,"epssPercentile":26,"epssTimeSeries":39,"severity":40,"affectedProducts":41,"affectedProductsCount":47,"references":48,"referencesCount":57,"weaknesses":58,"weaknessesCount":47,"isActivelyExploited":67,"cisaInfo":26,"otxData":26,"relatedBlogPosts":68,"seoMetadata":69,"configurations":94,"relatedVendorCves":104,"notableEvents":105},"CVE-2021-31615","What is CVE-2021-31615?","Unencrypted Bluetooth Low Energy baseband links in Bluetooth Core Specifications 4.0 through 5.2 may permit an adjacent device to inject a crafted packet during the receive window of the listening device before the transmitting device initiates its packet transmission to achieve full MITM status without terminating the link. When applied against devices establishing or using encrypted links, crafted packets may be used to terminate an existing link, but will not compromise the confidentiality or integrity of the link.","Unencrypted Bluetooth Low Energy baseband links in Bluetooth Core Specifications 4.0 through 5.2 may permit an adjacent device to inject a crafted packet dur...","2021-06-25T12:15:08.43","2022-07-12T17:42:04.277",5.3,"CVSS:3.1\u002FAV:A\u002FAC:H\u002FPR:N\u002FUI:N\u002FS:U\u002FC:N\u002FI:N\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":23,"Scope":24,"ConfidentialityImpact":23,"IntegrityImpact":23,"AvailabilityImpact":22,"BaseScore":12,"BaseSeverity":25,"ExploitCodeMaturity":26,"RemediationLevel":26,"ReportConfidence":26,"TemporalScore":26,"TemporalSeverity":26,"ConfidentialityRequirement":26,"IntegrityRequirement":26,"AvailabilityRequirement":22,"ModifiedAttackVector":26,"ModifiedAttackComplexity":26,"ModifiedPrivilegesRequired":26,"ModifiedUserInteraction":26,"ModifiedScope":26,"ModifiedConfidentialityImpact":26,"ModifiedIntegrityImpact":26,"ModifiedAvailabilityImpact":26,"EnvironmentalScore":26,"EnvironmentalSeverity":26},"3.1","ADJACENT_NETWORK","HIGH","NONE","UNCHANGED","MEDIUM",null,1.6,3.6,[30],{"Source":17,"Type":18,"CVSSData":31,"BaseSeverity":36,"ExploitabilityScore":37,"ImpactScore":35,"ACInsufInfo":26,"ObtainAllPrivilege":26,"ObtainUserPrivilege":26,"ObtainOtherPrivilege":26,"UserInteractionRequired":26},{"Version":32,"VectorString":33,"AccessVector":21,"AccessComplexity":25,"Authentication":23,"ConfidentialityImpact":23,"IntegrityImpact":23,"AvailabilityImpact":34,"BaseScore":35,"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:A\u002FAC:M\u002FAu:N\u002FC:N\u002FI:N\u002FA:P","PARTIAL",2.9,"LOW",5.5,0.00405,[38,38,38,38,38,38,38],"Medium",[42],{"vendor":43,"product":44,"version":45,"criteria":46,"vulnerable":4},"bluetooth","bluetooth_core_specification","*","cpe:2.3:a:bluetooth:bluetooth_core_specification:*:*:*:*:*:*:*:*",1,[49,54],{"url":50,"source":51,"tags":52},"https:\u002F\u002Fbluetooth.com","Bluetooth",[53],"Vendor Advisory",{"url":55,"source":51,"tags":56},"https:\u002F\u002Fwww.bluetooth.com\u002Flearn-about-bluetooth\u002Fkey-attributes\u002Fbluetooth-security\u002Finjectable\u002F",[53],2,[59],{"id":60,"name":61,"description":62,"extendedDescription":63,"status":64,"abstraction":65,"structure":66},"CWE-362","Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')","The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.","This can have security implications when the expected synchronization is in security-critical code, such as recording whether a user is authenticated or modifying important state information that should not be influenced by an outsider.\nA race condition occurs within concurrent environments, and is effectively a property of a code sequence. Depending on the context, a code sequence may be in the form of a function call, a small number of instructions, a series of program invocations, etc.\nA race condition violates these properties, which are closely related:\nA race condition exists when an \"interfering code sequence\" can still access the shared resource, violating exclusivity. Programmers may assume that certain code sequences execute too quickly to be affected by an interfering code sequence; when they are not, this violates atomicity. For example, the single \"x++\" statement may appear atomic at the code layer, but it is actually non-atomic at the instruction layer, since it involves a read (the original value of x), followed by a computation (x+1), followed by a write (save the result to x).\nThe interfering code sequence could be \"trusted\" or \"untrusted.\" A trusted interfering code sequence occurs within the product; it cannot be modified by the attacker, and it can only be invoked indirectly. An untrusted interfering code sequence can be authored directly by the attacker, and typically it is external to the vulnerable product.","Draft","Class","Simple",false,[],{"title":70,"metaDescription":71,"keywords":72,"canonicalUrl":73,"structuredData":74},"What is CVE-2021-31615? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2021-31615, a medium severity cyber security vulnerability from 2021. Unencrypted Bluetooth Low Energy baseband links in Blueto...","CVE-2021-31615, CVE-2021-31615 vulnerability, CVE-2021-31615 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, bluetooth security, bluetooth_core_specification vulnerability","\u002Fwhat-is\u002Fcve-2021-31615",{"@context":75,"@type":76,"headline":70,"description":71,"datePublished":10,"dateModified":11,"author":77,"publisher":81,"about":85,"mainEntityOfPage":89,"articleSection":92,"keywords":93},"https:\u002F\u002Fschema.org","TechArticle",{"@type":78,"name":79,"url":80},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":78,"name":79,"url":80,"logo":82},{"@type":83,"url":84},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":86,"name":6,"description":87,"additionalType":88},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":90,"@id":91},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2021-31615","Cybersecurity","CVE-2021-31615, CVE-2021-31615 vulnerability, CVE-2021-31615 security, medium severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[95],{"Operator":26,"Negate":26,"Nodes":96},[97],{"Operator":98,"Negate":26,"CPEMatch":99},"OR",[100],{"Vulnerable":4,"Criteria":46,"MatchCriteriaID":101,"VersionStartExcluding":26,"VersionStartIncluding":102,"VersionEndExcluding":26,"VersionEndIncluding":103},"313E8F2B-729D-4037-A7D1-BEB2234EFB85","4.0","5.2",[],[],{"lastModified":11,"cacheTime":107,"version":32},1792440937057,{"score":109,"band":110,"action":111,"scoredAt":112},15,"Info","Track","2026-10-16T06:51:24.138906+00:00"]