[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fA9QsWrPeDCeTxOH_Qc6wYX4Fv5aljhatDsxF6L8M9xY":3,"g5a-risk:CVE-2020-25687":195},{"success":4,"data":5,"meta":193},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":41,"epssPercentile":26,"epssTimeSeries":42,"severity":43,"affectedProducts":44,"affectedProductsCount":66,"references":67,"referencesCount":116,"weaknesses":117,"weaknessesCount":125,"isActivelyExploited":40,"cisaInfo":26,"otxData":26,"relatedBlogPosts":126,"seoMetadata":127,"configurations":152,"relatedVendorCves":177,"notableEvents":178},"CVE-2020-25687","What is CVE-2020-25687?","A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled and before it validates the received DNS entries. This flaw allows a remote attacker, who can create valid DNS replies, to cause an overflow in a heap-allocated memory. This flaw is caused by the lack of length checks in rfc1035.c:extract_name(), which could be abused to make the code execute memcpy() with a negative size in sort_rrset() and cause a crash in dnsmasq, resulting in a denial of service. The highest threat from this vulnerability is to system availability.","A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled and before it validates the re...","2021-01-20T17:15:13.06","2025-11-04T20:15:57.61",5.9,"CVSS:3.1\u002FAV:N\u002FAC:H\u002FPR:N\u002FUI:N\u002FS:U\u002FC:N\u002FI:N\u002FA:H",{"CVSSMetricV31":15,"CVSSMetricV30":29,"CVSSMetricV2":30,"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":26,"ModifiedAttackVector":26,"ModifiedAttackComplexity":26,"ModifiedPrivilegesRequired":26,"ModifiedUserInteraction":26,"ModifiedScope":26,"ModifiedConfidentialityImpact":26,"ModifiedIntegrityImpact":26,"ModifiedAvailabilityImpact":26,"EnvironmentalScore":26,"EnvironmentalSeverity":26},"3.1","NETWORK","HIGH","NONE","UNCHANGED","MEDIUM",null,2.2,3.6,[],[31],{"Source":17,"Type":18,"CVSSData":32,"BaseSeverity":22,"ExploitabilityScore":38,"ImpactScore":39,"ACInsufInfo":40,"ObtainAllPrivilege":40,"ObtainUserPrivilege":40,"ObtainOtherPrivilege":40,"UserInteractionRequired":40},{"Version":33,"VectorString":34,"AccessVector":21,"AccessComplexity":25,"Authentication":23,"ConfidentialityImpact":23,"IntegrityImpact":23,"AvailabilityImpact":35,"BaseScore":36,"BaseSeverity":37,"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:M\u002FAu:N\u002FC:N\u002FI:N\u002FA:C","COMPLETE",7.1,"",8.6,6.9,false,0.86692,[41,41,41,41,41,41,41],"Medium",[45,50,55,58,63],{"vendor":46,"product":47,"version":48,"criteria":49,"vulnerable":4},"thekelleys","dnsmasq","*","cpe:2.3:a:thekelleys:dnsmasq:*:*:*:*:*:*:*:*",{"vendor":51,"product":52,"version":53,"criteria":54,"vulnerable":4},"fedoraproject","fedora","32","cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*",{"vendor":51,"product":52,"version":56,"criteria":57,"vulnerable":4},"33","cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",{"vendor":59,"product":60,"version":61,"criteria":62,"vulnerable":4},"debian","debian_linux","9.0","cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",{"vendor":59,"product":60,"version":64,"criteria":65,"vulnerable":4},"10.0","cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",5,[68,75,80,84,87,91,94,98,100,102,104,106,108,110,112],{"url":69,"source":70,"tags":71},"https:\u002F\u002Fbugzilla.redhat.com\u002Fshow_bug.cgi?id=1891568","Red Hat",[72,73,74],"Issue Tracking","Patch","Third Party Advisory",{"url":76,"source":77,"tags":78},"https:\u002F\u002Flists.debian.org\u002Fdebian-lts-announce\u002F2021\u002F03\u002Fmsg00027.html","Debian",[79,74],"Mailing List",{"url":81,"source":82,"tags":83},"https:\u002F\u002Flists.fedoraproject.org\u002Farchives\u002Flist\u002Fpackage-announce%40lists.fedoraproject.org\u002Fmessage\u002FQGB7HL3OWHTLEPSMLDGOMXQKG3KM2QME\u002F","Fedoraproject",[],{"url":85,"source":82,"tags":86},"https:\u002F\u002Flists.fedoraproject.org\u002Farchives\u002Flist\u002Fpackage-announce%40lists.fedoraproject.org\u002Fmessage\u002FWYW3IR6APUSKOYKL5FT3ACTIHWHGQY32\u002F",[],{"url":88,"source":89,"tags":90},"https:\u002F\u002Fsecurity.gentoo.org\u002Fglsa\u002F202101-17","Gentoo",[74],{"url":92,"source":77,"tags":93},"https:\u002F\u002Fwww.debian.org\u002Fsecurity\u002F2021\u002Fdsa-4844",[74],{"url":95,"source":96,"tags":97},"https:\u002F\u002Fwww.jsof-tech.com\u002Fdisclosures\u002Fdnspooq\u002F","Jsof-tech",[74],{"url":69,"source":70,"tags":99},[72,73,74],{"url":76,"source":77,"tags":101},[79,74],{"url":81,"source":82,"tags":103},[],{"url":85,"source":82,"tags":105},[],{"url":88,"source":89,"tags":107},[74],{"url":92,"source":77,"tags":109},[74],{"url":95,"source":96,"tags":111},[74],{"url":113,"source":114,"tags":115},"https:\u002F\u002Fwww.kb.cert.org\u002Fvuls\u002Fid\u002F434904","Cert",[],15,[118],{"id":119,"name":120,"description":121,"extendedDescription":37,"status":122,"abstraction":123,"structure":124},"CWE-122","Heap-based Buffer Overflow","A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().","Draft","Variant","Simple",1,[],{"title":128,"metaDescription":129,"keywords":130,"canonicalUrl":131,"structuredData":132},"What is CVE-2020-25687? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2020-25687, a medium severity cyber security vulnerability from 2021. High exploit probability (86.7%). A flaw was found in dns...","CVE-2020-25687, CVE-2020-25687 vulnerability, CVE-2020-25687 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, thekelleys security, fedoraproject security, debian security, dnsmasq vulnerability, fedora vulnerability, debian_linux vulnerability, high risk vulnerability, actively exploited","\u002Fwhat-is\u002Fcve-2020-25687",{"@context":133,"@type":134,"headline":128,"description":129,"datePublished":10,"dateModified":11,"author":135,"publisher":139,"about":143,"mainEntityOfPage":147,"articleSection":150,"keywords":151},"https:\u002F\u002Fschema.org","TechArticle",{"@type":136,"name":137,"url":138},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":136,"name":137,"url":138,"logo":140},{"@type":141,"url":142},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":144,"name":6,"description":145,"additionalType":146},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":148,"@id":149},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2020-25687","Cybersecurity","CVE-2020-25687, CVE-2020-25687 vulnerability, CVE-2020-25687 security, medium severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[153,161,169],{"Operator":26,"Negate":26,"Nodes":154},[155],{"Operator":156,"Negate":40,"CPEMatch":157},"OR",[158],{"Vulnerable":4,"Criteria":49,"MatchCriteriaID":159,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":160,"VersionEndIncluding":26},"F38115DF-0F5C-442D-83D4-1125AAB4E2B7","2.83",{"Operator":26,"Negate":26,"Nodes":162},[163],{"Operator":156,"Negate":40,"CPEMatch":164},[165,167],{"Vulnerable":4,"Criteria":54,"MatchCriteriaID":166,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"36D96259-24BD-44E2-96D9-78CE1D41F956",{"Vulnerable":4,"Criteria":57,"MatchCriteriaID":168,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"E460AA51-FCDA-46B9-AE97-E6676AA5E194",{"Operator":26,"Negate":26,"Nodes":170},[171],{"Operator":156,"Negate":40,"CPEMatch":172},[173,175],{"Vulnerable":4,"Criteria":62,"MatchCriteriaID":174,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"DEECE5FC-CACF-4496-A3E7-164736409252",{"Vulnerable":4,"Criteria":65,"MatchCriteriaID":176,"VersionStartExcluding":26,"VersionStartIncluding":26,"VersionEndExcluding":26,"VersionEndIncluding":26},"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",[],[179,186],{"id":180,"eventType":181,"eventTime":182,"details":183,"label":184,"color":185},"56419405-4495-483d-baff-f6e9d073537f","HIGH_EPSS_DELTA","2025-09-13T04:07:14.071043+00:00","Daily EPSS score increased by 0.258 on 2023-12-30","EPSS Score Increased","red",{"id":187,"eventType":188,"eventTime":189,"details":190,"label":191,"color":192},"e4f2a03a-bd5c-4837-85e4-724af1f8fd0d","LOW_EPSS_DELTA","2025-10-30T04:25:19.534935+00:00","Daily EPSS score decreased by 0.223 on 2023-12-30","EPSS Score Decreased","green",{"lastModified":11,"cacheTime":194,"version":33},1792333096377,{"score":196,"band":43,"action":197,"scoredAt":198},59,"Plan remediation","2026-10-16T06:50:20.305586+00:00"]