Vulnerability Details : CVE-2021-4127
Potential exploit
An out of date graphics library (Angle) likely contained vulnerabilities that could potentially be exploited.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.
Products affected by CVE-2021-4127
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-4127
0.24%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 44 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-4127
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
134c704f-9b21-4f2e-91b3-4a467353bcc0 | 2025-04-16 |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
References for CVE-2021-4127
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1691547
1691547 - (CVE-2021-4127) Angle Security Backports for ESR-78Exploit;Issue Tracking;Patch;Vendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2021-12/
Security Vulnerabilities fixed in Thunderbird 78.9 — MozillaVendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2021-11/
Security Vulnerabilities fixed in Firefox ESR 78.9 — MozillaVendor Advisory
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