2025-10-28

Use-after-free vulnerability in Mozilla Firefox 142 and 143 enables compromised renderer processes to trigger memory corruption in the GPU or browser process via malicious WebGPU IPC calls, potentially achieving sandbox escape. Affecting Firefox versions 142.0 through 144.0.1, this CWE-416 flaw carries CVSS 9.8 despite low real-world exploitation probability (EPSS 0.06%, 18th percentile). No public exploit identified at time of analysis. Patched in Firefox 144.0.2 released January 2025.