Vulnerability in Mozilla Firefox Esr
CVE-2021-4127
An out of date graphics library (Angle) likely contained vulnerabilities that could potentially be exploited. This vulnerability affects Thunderbird < 78.9 and Firefox ESR < 78.9.
EPSS: 0.009 (56.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Mozilla Firefox Esr — versions unspecified
- Mozilla Firefox_esr
- Mozilla Thunderbird — versions unspecified
References
- security@mozilla.org (Vendor Advisory)
- security@mozilla.org (Vendor Advisory)
- security@mozilla.org (Exploit, Patch, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-4127?
- CVE-2021-4127 is a critical-severity vulnerability in Mozilla Firefox Esr. CVSS score: 9.8/10. Published 2022-12-22.
- How severe is CVE-2021-4127?
- Critical severity. CVSS v3 base score is 9.8 out of 10.