Firefox v147.0.3 Released with Critical Fix for Heap Buffer Overflow Vulnerability

Mozilla has released an emergency security update for Firefox, addressing a critical heap buffer overflow vulnerability in the libvpx library. The update, version 147.0.4, was announced on February 16, 2026, alongside corresponding patches for Firefox ESR 140.7.1 and ESR 115.32.1. The vulnerability, tracked as CVE-2026-2447, was discovered by security researcher jayjayjazz and affects the libvpx […]

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