CVE-2021-4127

Thunderbird: An out of date graphics library (Angle) likely contained vulnerabilities that could potentially be exploited.

CVE-2021-4127 is fixed in 4 products on 2 platforms, first by RHSA-2021:0990, released March 25, 2021. It is not reported as exploited. Patch Radar priority: High.

HighFixed on 2 platforms

CVSS

9.8

Important

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0095

61st percentile

An out of date graphics library (Angle) likely contained vulnerabilities that could potentially be exploited.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.

Where it's fixed

Product	Fixed in	Fix	Released
Windows apps
Mozilla Thunderbird (en-US)	78.10.0	Mozilla Thunderbird (en-US) 78.10.0	Apr 15, 2021
Linux
firefox · RHEL 8	0:78.9.0-1.el8_3	RHSA-2021:0990	Mar 25, 2021
firefox-esr · Debian 12.15 (bookworm)	78.9.0esr-1	DEBIAN-CVE-2021-4127	Dec 22, 2022
firefox-esr · Debian 13.5 (trixie)	78.9.0esr-1	DEBIAN-CVE-2021-4127	Dec 22, 2022
firefox-esr · Debian 14	78.9.0esr-1	DEBIAN-CVE-2021-4127	Dec 22, 2022
thunderbird · Debian 12.15 (bookworm)	1:78.9.0-1	DEBIAN-CVE-2021-4127	Dec 22, 2022
thunderbird · Debian 13.5 (trixie)	1:78.9.0-1	DEBIAN-CVE-2021-4127	Dec 22, 2022
thunderbird · Debian 14	1:78.9.0-1	DEBIAN-CVE-2021-4127	Dec 22, 2022
thunderbird · RHEL 8	0:78.9.0-3.el8_3	RHSA-2021:0993	Mar 25, 2021

Details

Published
March 25, 2021
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vendor advisory
https://nvd.nist.gov/vuln/detail/CVE-2021-4127

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