CVE-2026-0892

Memory safety bugs fixed in Firefox 147 and Thunderbird 147

CVSS 9.8 CRITICALEPSS 0.4%CWE-119

Vexday Risk Score

28Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS 9.8EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

13 jan 2026Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

Memory safety bugs present in Firefox 146 and Thunderbird 146. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 147 and Thunderbird 147.

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

Produtos afetados

Mozilla · Firefox Mozilla · Thunderbird

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Referências

https://bugzilla.mozilla.org/buglist.cgi?bug_id=1986912%2C1996718%2C1999633%2C2001081%2C2004443 https://www.mozilla.org/security/advisories/mfsa2026-01/https://www.mozilla.org/security/advisories/mfsa2026-04/