CVE-2026-74946 in Firefox

Sumário

de MITRE • 18/08/2026

Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, and Firefox ESR 153.1.

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• Responsável: Mozilla
• Reservar: 17/08/2026
• Divulgação: 18/08/2026
• Moderação: aceite
• Entrada: VDB-391582
• CPE: pronto
• CWE: CWE-269 (confirmado)
• CVSS: 6.3 (VulDB)
• EPSS: 0.00350
• KEV: não
• Atividades: muito baixo
• Sector: Chemical, Transportation, ...

Fontes

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-74946
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-74946
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-74946/