{"api_version":"1","generated_at":"2026-07-01T08:33:04+00:00","cve":"CVE-2009-4171","urls":{"html":"https://cve.report/CVE-2009-4171","api":"https://cve.report/api/cve/CVE-2009-4171.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2009-4171","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2009-4171"},"summary":{"title":"CVE-2009-4171","description":"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.","state":"PUBLISHED","assigner":"mitre","published_at":"2009-12-02 19:30:00","updated_at":"2026-04-23 00:35:47"},"problem_types":["CWE-119","n/a"],"metrics":[{"version":"2.0","source":"nvd@nist.gov","type":"Primary","score":"4.3","severity":"","vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","data":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:N/I:N/A:P","baseScore":4.3,"accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL"}}],"references":[{"url":"http://www.securityfocus.com/archive/1/507818/100/0/threaded","name":"http://www.securityfocus.com/archive/1/507818/100/0/threaded","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"SecurityFocus","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/54263","name":"https://exchange.xforce.ibmcloud.com/vulnerabilities/54263","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"IBM X-Force Exchange","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.securityfocus.com/bid/37007","name":"http://www.securityfocus.com/bid/37007","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit"],"title":"Yahoo! Messenger 'YahooBridgeLib.dll' ActiveX Control Remote Denial of Service Vulnerability","mime":"text/html","httpstatus":"200","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2009-4171","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-4171","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"n/a","product":"n/a","version":"affected n/a","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2009","cve_id":"4171","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"yahoo","cpe5":"messenger","cpe6":"9.0.0.2162","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"providerMetadata":{"dateUpdated":"2024-08-07T06:54:09.794Z","orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE"},"references":[{"name":"20091112 Yahoo Messenger 9 ActiveX DoS (Null Pointer) Vulnerability","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"],"url":"http://www.securityfocus.com/archive/1/507818/100/0/threaded"},{"name":"yahoo-messenger-activex-dos(54263)","tags":["vdb-entry","x_refsource_XF","x_transferred"],"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/54263"},{"name":"37007","tags":["vdb-entry","x_refsource_BID","x_transferred"],"url":"http://www.securityfocus.com/bid/37007"}],"title":"CVE Program Container"}],"cna":{"affected":[{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}],"datePublic":"2009-11-12T00:00:00.000Z","descriptions":[{"lang":"en","value":"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."}],"problemTypes":[{"descriptions":[{"description":"n/a","lang":"en","type":"text"}]}],"providerMetadata":{"dateUpdated":"2018-10-10T18:57:01.000Z","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","shortName":"mitre"},"references":[{"name":"20091112 Yahoo Messenger 9 ActiveX DoS (Null Pointer) Vulnerability","tags":["mailing-list","x_refsource_BUGTRAQ"],"url":"http://www.securityfocus.com/archive/1/507818/100/0/threaded"},{"name":"yahoo-messenger-activex-dos(54263)","tags":["vdb-entry","x_refsource_XF"],"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/54263"},{"name":"37007","tags":["vdb-entry","x_refsource_BID"],"url":"http://www.securityfocus.com/bid/37007"}],"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2009-4171","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"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."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"name":"20091112 Yahoo Messenger 9 ActiveX DoS (Null Pointer) Vulnerability","refsource":"BUGTRAQ","url":"http://www.securityfocus.com/archive/1/507818/100/0/threaded"},{"name":"yahoo-messenger-activex-dos(54263)","refsource":"XF","url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/54263"},{"name":"37007","refsource":"BID","url":"http://www.securityfocus.com/bid/37007"}]}}}},"cveMetadata":{"assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","assignerShortName":"mitre","cveId":"CVE-2009-4171","datePublished":"2009-12-02T19:00:00.000Z","dateReserved":"2009-12-02T00:00:00.000Z","dateUpdated":"2024-08-07T06:54:09.794Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"},"nvd":{"publishedDate":"2009-12-02 19:30:00","lastModifiedDate":"2026-04-23 00:35:47","problem_types":["CWE-119","n/a"],"metrics":{"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:N/I:N/A:P","baseScore":4.3,"accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":8.6,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":true}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:yahoo:messenger:9.0.0.2162:*:*:*:*:*:*:*","matchCriteriaId":"6A1FEC40-A9EA-44AF-9DF3-1F85E1DDE4FF"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2009","CveId":"4171","Ordinal":"1","Title":"CVE-2009-4171","CVE":"CVE-2009-4171","Year":"2009"},"notes":[{"CveYear":"2009","CveId":"4171","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"CVE-2009-4171"},{"CveYear":"2009","CveId":"4171","Ordinal":"2","NoteData":"2009-12-02","Type":"Other","Title":"Published"},{"CveYear":"2009","CveId":"4171","Ordinal":"3","NoteData":"2018-10-10","Type":"Other","Title":"Modified"}]}}}