Critical severity9.8NVD Advisory· Published Dec 22, 2022· Updated Jun 17, 2026
CVE-2021-4127
CVE-2021-4127
Description
An out of date graphics library (Angle) likely contained vulnerabilities that could potentially be exploited.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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
6cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*range: <78.9.0
- (no CPE)range: <78.9
- (no CPE)range: unspecified
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*range: <78.9.0
- (no CPE)range: <78.9
- (no CPE)range: unspecified
Patches
Vulnerability mechanics
References
3- bugzilla.mozilla.org/show_bug.cginvdExploitIssue TrackingPatchVendor Advisory
- www.mozilla.org/security/advisories/mfsa2021-11/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2021-12/nvdVendor Advisory
News mentions
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