{"api_version":"1","generated_at":"2026-05-13T01:29:23+00:00","cve":"CVE-2021-29949","urls":{"html":"https://cve.report/CVE-2021-29949","api":"https://cve.report/api/cve/CVE-2021-29949.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-29949","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-29949"},"summary":{"title":"CVE-2021-29949","description":"When loading the shared library that provides the OTR protocol implementation, Thunderbird will initially attempt to open it using a filename that isn't distributed by Thunderbird. If a computer has already been infected with a malicious library of the alternative filename, and the malicious library has been copied to a directory that is contained in the search path for executable libraries, then Thunderbird will load the incorrect library. 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If a computer has already been infected with a malicious library of the alternative filename, and the malicious library has been copied to a directory that is contained in the search path for executable libraries, then Thunderbird will load the incorrect library. This vulnerability affects Thunderbird < 78.9.1."}]}},"nvd":{"publishedDate":"2021-06-24 14:15:00","lastModifiedDate":"2021-06-30 17:59:00","problem_types":["CWE-427"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:L/AC:M/Au:N/C:P/I:P/A:P","accessVector":"LOCAL","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":4.4},"severity":"MEDIUM","exploitabilityScore":3.4,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":true}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*","versionEndExcluding":"78.9.1","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"29949","Ordinal":"205180","Title":"CVE-2021-29949","CVE":"CVE-2021-29949","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"29949","Ordinal":"1","NoteData":"When loading the shared library that provides the OTR protocol implementation, Thunderbird will initially attempt to open it using a filename that isn't distributed by Thunderbird. If a computer has already been infected with a malicious library of the alternative filename, and the malicious library has been copied to a directory that is contained in the search path for executable libraries, then Thunderbird will load the incorrect library. This vulnerability affects Thunderbird < 78.9.1.","Type":"Description","Title":null},{"CveYear":"2021","CveId":"29949","Ordinal":"2","NoteData":"2021-06-24","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"29949","Ordinal":"3","NoteData":"2021-06-24","Type":"Other","Title":"Modified"}]}}}