CVE-2026-2786

Use-after-free in the JavaScript Engine component

CVSS 8.8 HIGHEPSS 0.3%CWE-416

Vexday Risk Score

21Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS 8.8EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

24 fev 2026Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Produtos afetados

Mozilla · Firefox Mozilla · Thunderbird

Referências

https://bugzilla.mozilla.org/show_bug.cgi?id=2013612 https://www.mozilla.org/security/advisories/mfsa2026-13/https://www.mozilla.org/security/advisories/mfsa2026-15/https://www.mozilla.org/security/advisories/mfsa2026-16/https://www.mozilla.org/security/advisories/mfsa2026-17/