{"cve":{"cve_id":"CVE-2023-29542","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.0094,"epss_percentile":0.56297,"epss_as_of":"2026-06-23","description":"A newline in a filename could have been used to bypass the file extension security mechanisms that replace malicious file extensions such as .lnk  with .download. This could have led to accidental execution of malicious code.\n\n*This bug only affects Firefox and Thunderbird on Windows. Other versions of Firefox and Thunderbird are unaffected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird < 102.10.\n\n","published_at":"2023-06-19T10:03:32.039000Z","last_modified_at":null,"cvss_v3_score":9.8,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_v3_severity":"CRITICAL","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"none","ssvc_automatable":true,"ssvc_technical_impact":"total","cwes":null,"nvd_references":["https://bugzilla.mozilla.org/show_bug.cgi?id=1810793","https://bugzilla.mozilla.org/show_bug.cgi?id=1815062","https://www.mozilla.org/security/advisories/mfsa2023-13/","https://www.mozilla.org/security/advisories/mfsa2023-14/","https://www.mozilla.org/security/advisories/mfsa2023-15/"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-29T01:29:30.835753Z"},"effective_severity":"CRITICAL","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"mozilla","vendor_name":"Mozilla","product_slug":"firefox","product_name":"Firefox","version_start":"unspecified","version_start_inclusive":true,"version_end":"112","version_end_inclusive":false,"cpe23_uri":"cve5:mozilla:firefox:unspecified:112"},{"vendor_slug":"mozilla","vendor_name":"Mozilla","product_slug":"firefox-esr","product_name":"Firefox ESR","version_start":"unspecified","version_start_inclusive":true,"version_end":"102.10","version_end_inclusive":false,"cpe23_uri":"cve5:mozilla:firefox-esr:unspecified:102.10"},{"vendor_slug":"mozilla","vendor_name":"Mozilla","product_slug":"thunderbird","product_name":"Thunderbird","version_start":"unspecified","version_start_inclusive":true,"version_end":"102.10","version_end_inclusive":false,"cpe23_uri":"cve5:mozilla:thunderbird:unspecified:102.10"}],"exploit_refs":[],"news":[],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1810793","source_type":"MISC","tags":[]},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1815062","source_type":"MISC","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-13/","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-14/","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2023-15/","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2023-06-19T10:03:32.039000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:27:51.475370Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:27:51.475370Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:27:51.475370Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"ssvc_changed","at":"2026-06-29T01:29:30.835753Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T01:29:30.835753Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T01:29:30.835753Z","label":"SSVC decision revised","source":"vulnrichment"}]}