this post was submitted on 27 Nov 2025
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AISLE discovered a stack buffer overflow in Firefox's WebAssembly engine that evaded detection for six months despite shipping with its own regression test. The vulnerability, CVE-2025-13016, enabled arbitrary code execution through a single line of incorrect pointer arithmetic, affecting over 180 million Firefox users worldwide.

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[โ€“] who@feddit.org 9 points 2 months ago

affected all Firefox versions from 143 through early 145, and Firefox ESR versions before 140.5

[โ€“] x00z@lemmy.world 4 points 2 months ago

They praised WebAssembly so hard but it's obviously such a dangerous vector.