[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fzWkoMdwB-FpUk3X0JOl3hSTgfEIzavuxDURDuz_TRzQ":3,"g5a-risk:CVE-2009-4171":110},{"success":4,"data":5,"meta":108},true,{"cveId":6,"title":7,"description":8,"shortDescription":9,"publishedDate":10,"lastModified":11,"cvssScore":12,"cvssVector":13,"cvssMetrics":14,"epssScore":33,"epssPercentile":28,"epssTimeSeries":34,"severity":35,"affectedProducts":36,"affectedProductsCount":42,"references":43,"referencesCount":62,"weaknesses":63,"weaknessesCount":42,"isActivelyExploited":31,"cisaInfo":28,"otxData":28,"relatedBlogPosts":72,"seoMetadata":73,"configurations":98,"relatedVendorCves":106,"notableEvents":107},"CVE-2009-4171","What is CVE-2009-4171?","An ActiveX control in YahooBridgeLib.dll for Yahoo! Messenger 9.0.0.2162, and possibly other 9.0 versions, allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) by calling the RegisterMe method with a long argument.","An ActiveX control in YahooBridgeLib.dll for Yahoo! Messenger 9.0.0.2162, and possibly other 9.0 versions, allows remote attackers to cause a denial of servi...","2009-12-02T19:30:00.25","2026-06-16T23:13:10.627",4.3,"AV:N\u002FAC:M\u002FAu:N\u002FC:N\u002FI:N\u002FA:P",{"CVSSMetricV31":15,"CVSSMetricV30":16,"CVSSMetricV2":17,"CVSSMetricV40":32},[],[],[18],{"Source":19,"Type":20,"CVSSData":21,"BaseSeverity":24,"ExploitabilityScore":29,"ImpactScore":30,"ACInsufInfo":31,"ObtainAllPrivilege":31,"ObtainUserPrivilege":31,"ObtainOtherPrivilege":31,"UserInteractionRequired":4},"nvd@nist.gov","Primary",{"Version":22,"VectorString":13,"AccessVector":23,"AccessComplexity":24,"Authentication":25,"ConfidentialityImpact":25,"IntegrityImpact":25,"AvailabilityImpact":26,"BaseScore":12,"BaseSeverity":27,"Exploitability":28,"RemediationLevel":28,"ReportConfidence":28,"TemporalScore":28,"CollateralDamagePotential":28,"TargetDistribution":28,"ConfidentialityRequirement":28,"IntegrityRequirement":28,"AvailabilityRequirement":28,"EnvironmentalScore":28},"2.0","NETWORK","MEDIUM","NONE","PARTIAL","",null,8.6,2.9,false,[],0.05087,[33,33,33,33,33,33,33],"Medium",[37],{"vendor":38,"product":39,"version":40,"criteria":41,"vulnerable":4},"yahoo","messenger","9.0.0.2162","cpe:2.3:a:yahoo:messenger:9.0.0.2162:*:*:*:*:*:*:*",1,[44,48,52,56,58,60],{"url":45,"source":46,"tags":47},"http:\u002F\u002Fwww.securityfocus.com\u002Farchive\u002F1\u002F507818\u002F100\u002F0\u002Fthreaded","Securityfocus",[],{"url":49,"source":46,"tags":50},"http:\u002F\u002Fwww.securityfocus.com\u002Fbid\u002F37007",[51],"Exploit",{"url":53,"source":54,"tags":55},"https:\u002F\u002Fexchange.xforce.ibmcloud.com\u002Fvulnerabilities\u002F54263","Ibmcloud",[],{"url":45,"source":46,"tags":57},[],{"url":49,"source":46,"tags":59},[51],{"url":53,"source":54,"tags":61},[],6,[64],{"id":65,"name":66,"description":67,"extendedDescription":68,"status":69,"abstraction":70,"structure":71},"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",[],{"title":74,"metaDescription":75,"keywords":76,"canonicalUrl":77,"structuredData":78},"What is CVE-2009-4171? Vulnerability Analysis | Security Advisory | Precursor Intelligence","Comprehensive analysis of CVE-2009-4171, a medium severity cyber security vulnerability from 2009. An ActiveX control in YahooBridgeLib.dll for Yahoo! Messen...","CVE-2009-4171, CVE-2009-4171 vulnerability, CVE-2009-4171 security, medium severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research, vulnerability assessment, cyber threats, 2009, CVSS score, exploit, patch, remediation, yahoo security, messenger vulnerability","\u002Fwhat-is\u002Fcve-2009-4171",{"@context":79,"@type":80,"headline":74,"description":75,"datePublished":10,"dateModified":11,"author":81,"publisher":85,"about":89,"mainEntityOfPage":93,"articleSection":96,"keywords":97},"https:\u002F\u002Fschema.org","TechArticle",{"@type":82,"name":83,"url":84},"Organization","Precursor Intelligence","https:\u002F\u002Fprecursorintelligence.com",{"@type":82,"name":83,"url":84,"logo":86},{"@type":87,"url":88},"ImageObject","https:\u002F\u002Fprecursorintelligence.com\u002Fimg\u002Flogos\u002Feplogo.png",{"@type":90,"name":6,"description":91,"additionalType":92},"Thing","Cybersecurity Vulnerability","https:\u002F\u002Fschema.org\u002FSoftwareBug",{"@type":94,"@id":95},"WebPage","https:\u002F\u002Fprecursorintelligence.com\u002Fwhat-is\u002Fcve-2009-4171","Cybersecurity","CVE-2009-4171, CVE-2009-4171 vulnerability, CVE-2009-4171 security, medium severity vulnerability, cybersecurity, vulnerability analysis, security advisory, CVE database, threat intelligence, security research",[99],{"Operator":28,"Negate":28,"Nodes":100},[101],{"Operator":102,"Negate":31,"CPEMatch":103},"OR",[104],{"Vulnerable":4,"Criteria":41,"MatchCriteriaID":105,"VersionStartExcluding":28,"VersionStartIncluding":28,"VersionEndExcluding":28,"VersionEndIncluding":28},"6A1FEC40-A9EA-44AF-9DF3-1F85E1DDE4FF",[],[],{"lastModified":11,"cacheTime":109,"version":22},1792444327426,{"score":111,"band":112,"action":113,"scoredAt":114},37,"Low","Monitor","2026-10-19T06:38:32.52082+00:00"]