VULNERABILITY INTELLIGENCE
CVE-2021-23994
CVSS score8.8 HIGH
EPSS probability1.76%
CISA KEVNot currently listed
Published2021-06-24
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Description
A WebGL framebuffer was not initialized early enough, resulting in memory corruption and an out of bound write. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
Weakness classification
- nvd@nist.gov: CWE-909
Primary references
- security@mozilla.org — Issue Tracking, Permissions Required, Vendor Advisory
- security@mozilla.org — Release Notes, Vendor Advisory
- security@mozilla.org — Release Notes, Vendor Advisory
- security@mozilla.org — Release Notes, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Permissions Required, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Release Notes, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Release Notes, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Release Notes, Vendor Advisory