CVE-2020-26971

Mozilla: Heap buffer overflow in WebGL

Loading…

Severity

Important

Red Hat Product Security

8.8

CVSS 3.1

Review impact separately from score.

Published · December 15, 2020

Updated · November 22, 2025

Description

The Mozilla Foundation Security Advisory describes this flaw as:

Certain blit values provided by the user were not properly constrained leading to a heap buffer overflow on some video drivers.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')