CVE-2026-12309

Memory safety bug fixed in Firefox 152

CVSS 6.5 MEDIUMEPSS 0.2%CWE-119

Vexday Risk Score

13Bajo

Decisión SSVC (CISA)

Track

Sin señal de explotación → monitorear

CVSS 6.5EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

16 jun 2026Publicada en NVD

Recomendación: Monitorear — sin señal de explotación por ahora.

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

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

Productos afectados

Mozilla · Firefox Mozilla · Thunderbird

Referencias

https://bugzilla.mozilla.org/show_bug.cgi?id=2038476 https://www.mozilla.org/security/advisories/mfsa2026-57/https://www.mozilla.org/security/advisories/mfsa2026-58/https://www.mozilla.org/security/advisories/mfsa2026-60/https://www.mozilla.org/security/advisories/mfsa2026-61/