PT-2026-102538 · Mozilla · Firefox+1

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CVE-2026-100764

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Published

2026-09-29

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Updated

2026-09-30

CVSS v3.1

8.8

High

VectorAV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Thunderbird versions prior to 157 Firefox versions prior to 157
Description Incorrect boundary conditions in the Graphics: WebGPU component allow for privilege escalation.
Recommendations Update Thunderbird to version 157. Update Firefox to version 157.

Fix

LPE

Buffer Overflow

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Weakness Enumeration

Related Identifiers

CVE-2026-100764

Affected Products

Firefox
Thunderbird