CVE-2026-2767 in Firefox

Sumário

de VulDB • 04/06/2026

Use-after-free no componente JavaScript: WebAssembly. Esta vulnerabilidade afeta o Firefox < 148, o Firefox ESR < 140.8, o Thunderbird < 148 e o Thunderbird < 140.8.

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• Responsável: Mozilla
• Reservar: 19/02/2026
• Divulgação: 24/02/2026
• Moderação: aceite
• Entrada: VDB-347556
• CPE: pronto
• CWE: CWE-416 (confirmado)
• CVSS: 9.8 (NVD)
• EPSS: 0.00384
• KEV: não
• Atividades: muito baixo
• Sector: Energy, Hostingprovider, ...

Fontes

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-2767
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-2767
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-2767/