[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fKsl5kXCRUgvVDRmuWkZSTjER064iIfyO9XoccQYyZYM":3,"g5a-risk:CVE-2021-46837":161},{"success":4,"data":5,"meta":158},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":30,"epssPercentile":27,"epssTimeSeries":31,"severity":32,"affectedProducts":33,"affectedProductsCount":54,"references":55,"referencesCount":70,"weaknesses":71,"weaknessesCount":80,"isActivelyExploited":81,"cisaInfo":27,"otxData":27,"relatedBlogPosts":82,"seoMetadata":83,"configurations":108,"relatedVendorCves":156,"notableEvents":157},"CVE-2021-46837","What is CVE-2021-46837?","res_pjsip_t38 in Sangoma Asterisk 16.x before 16.16.2, 17.x before 17.9.3, and 18.x before 18.2.2, and Certified Asterisk before 16.8-cert7, allows an attacker to trigger a crash by sending an m=image line and zero port in a response to a T.38 re-invite initiated by Asterisk. This is a re-occurrence of the CVE-2019-15297 symptoms but not for exactly the same reason. The crash occurs because there is an append operation relative to the active topology, but this should instead be a replace operation.","res_pjsip_t38 in Sangoma Asterisk 16.x before 16.16.2, 17.x before 17.9.3, and 18.x before 18.2.2, and Certified Asterisk before 16.8-cert7, allows an attack...","2022-08-30T07:15:07.417","2023-01-28T01:20:40.947",6.5,"CVSS:3.1\u002FAV:N\u002FAC:L\u002FPR:L\u002FUI:N\u002FS:U\u002FC:N\u002FI:N\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":27,"CVSSMetricV2":27,"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":22,"UserInteraction":23,"Scope":24,"ConfidentialityImpact":23,"IntegrityImpact":23,"AvailabilityImpact":25,"BaseScore":12,"BaseSeverity":26,"ExploitCodeMaturity":27,"RemediationLevel":27,"ReportConfidence":27,"TemporalScore":27,"TemporalSeverity":27,"ConfidentialityRequirement":27,"IntegrityRequirement":27,"AvailabilityRequirement":25,"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","UNCHANGED","HIGH","MEDIUM",null,2.8,3.6,0.04379,[30,30,30,30,30,30,30],"Medium",[34,39,43,48,51],{"vendor":35,"product":36,"version":37,"criteria":38,"vulnerable":4},"asterisk","certified_asterisk","16.8.0","cpe:2.3:a:asterisk:certified_asterisk:16.8.0:-:*:*:*:*:*:*",{"vendor":40,"product":35,"version":41,"criteria":42,"vulnerable":4},"digium","*","cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*",{"vendor":44,"product":45,"version":46,"criteria":47,"vulnerable":4},"debian","debian_linux","9.0","cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",{"vendor":44,"product":45,"version":49,"criteria":50,"vulnerable":4},"10.0","cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",{"vendor":44,"product":45,"version":52,"criteria":53,"vulnerable":4},"11.0","cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",5,[56,61,67],{"url":57,"source":58,"tags":59},"https:\u002F\u002Fdownloads.asterisk.org\u002Fpub\u002Fsecurity\u002FAST-2021-006.html","Asterisk",[60],"Vendor Advisory",{"url":62,"source":63,"tags":64},"https:\u002F\u002Flists.debian.org\u002Fdebian-lts-announce\u002F2022\u002F11\u002Fmsg00021.html","Debian",[65,66],"Mailing List","Third Party Advisory",{"url":68,"source":63,"tags":69},"https:\u002F\u002Fwww.debian.org\u002Fsecurity\u002F2022\u002Fdsa-5285",[66],3,[72],{"id":73,"name":74,"description":75,"extendedDescription":76,"status":77,"abstraction":78,"structure":79},"CWE-476","NULL Pointer Dereference","The product dereferences a pointer that it expects to be valid but is NULL.","","Stable","Base","Simple",1,false,[],{"title":84,"metaDescription":85,"keywords":86,"canonicalUrl":87,"structuredData":88},"What is CVE-2021-46837? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2021-46837, a medium severity cyber security vulnerability from 2022. res_pjsip_t38 in Sangoma Asterisk 16.x before 16.16.2, 17...","CVE-2021-46837, CVE-2021-46837 vulnerability, CVE-2021-46837 security, medium severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2022, CVSS score, exploit, patch, remediation, asterisk security, digium security, debian security, certified_asterisk vulnerability, asterisk vulnerability, debian_linux vulnerability","\u002Fwhat-is\u002Fcve-2021-46837",{"@context":89,"@type":90,"headline":84,"description":85,"datePublished":10,"dateModified":11,"author":91,"publisher":95,"about":99,"mainEntityOfPage":103,"articleSection":106,"keywords":107},"https:\u002F\u002Fschema.org","TechArticle",{"@type":92,"name":93,"url":94},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":92,"name":93,"url":94,"logo":96},{"@type":97,"url":98},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":100,"name":6,"description":101,"additionalType":102},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":104,"@id":105},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2021-46837","Cybersecurity","CVE-2021-46837, CVE-2021-46837 vulnerability, CVE-2021-46837 security, medium severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[109,146],{"Operator":27,"Negate":27,"Nodes":110},[111],{"Operator":112,"Negate":27,"CPEMatch":113},"OR",[114,116,119,122,125,128,131,134,138,142],{"Vulnerable":4,"Criteria":38,"MatchCriteriaID":115,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"335EF1B5-AD89-48E2-AB2C-BF376BC36F77",{"Vulnerable":4,"Criteria":117,"MatchCriteriaID":118,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert1:*:*:*:*:*:*","E64BCD44-2298-4710-9CC3-DF82E6A8DF94",{"Vulnerable":4,"Criteria":120,"MatchCriteriaID":121,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert2:*:*:*:*:*:*","A35C117A-6EFB-42EB-AD2A-EA7866606927",{"Vulnerable":4,"Criteria":123,"MatchCriteriaID":124,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert3:*:*:*:*:*:*","40003CBE-792F-4875-9E60-6F1CE0BBAA8E",{"Vulnerable":4,"Criteria":126,"MatchCriteriaID":127,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert4:*:*:*:*:*:*","46A7AA7B-13F2-496A-99ED-1CC13234E8CB",{"Vulnerable":4,"Criteria":129,"MatchCriteriaID":130,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert5:*:*:*:*:*:*","147663CB-B48D-4D89-96BF-F92FF96F347F",{"Vulnerable":4,"Criteria":132,"MatchCriteriaID":133,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"cpe:2.3:a:asterisk:certified_asterisk:16.8.0:cert6:*:*:*:*:*:*","27DBBC83-930A-4ECE-8C1E-47481D881B0D",{"Vulnerable":4,"Criteria":42,"MatchCriteriaID":135,"VersionStartExcluding":27,"VersionStartIncluding":136,"VersionEndExcluding":137,"VersionEndIncluding":27},"E6D5A9E8-239F-492C-95AD-7CF2AB964D87","16.0.0","16.16.2",{"Vulnerable":4,"Criteria":42,"MatchCriteriaID":139,"VersionStartExcluding":27,"VersionStartIncluding":140,"VersionEndExcluding":141,"VersionEndIncluding":27},"9CA36883-D695-47A1-8CA7-2F128BFA194D","17.0.0","17.9.3",{"Vulnerable":4,"Criteria":42,"MatchCriteriaID":143,"VersionStartExcluding":27,"VersionStartIncluding":144,"VersionEndExcluding":145,"VersionEndIncluding":27},"8DEE180D-A041-42AB-AE5E-DDBD9CF0AACF","18.0.0","18.2.2",{"Operator":27,"Negate":27,"Nodes":147},[148],{"Operator":112,"Negate":27,"CPEMatch":149},[150,152,154],{"Vulnerable":4,"Criteria":47,"MatchCriteriaID":151,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"DEECE5FC-CACF-4496-A3E7-164736409252",{"Vulnerable":4,"Criteria":50,"MatchCriteriaID":153,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",{"Vulnerable":4,"Criteria":53,"MatchCriteriaID":155,"VersionStartExcluding":27,"VersionStartIncluding":27,"VersionEndExcluding":27,"VersionEndIncluding":27},"FA6FEEC2-9F11-4643-8827-749718254FED",[],[],{"lastModified":11,"cacheTime":159,"version":160},1792453958866,"2.0",{"score":162,"band":163,"action":164,"scoredAt":165},26,"Low","Monitor","2026-10-16T06:55:33.702556+00:00"]