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CVE-2021-4126

🗓️ 22 Dec 2022 20:15:11Reported by [email protected]Type 
nvd
 nvd
🔗 web.nvd.nist.gov👁 17 Views

When receiving OpenPGP/MIME signed email message, Thunderbird < 91.4.1 wrongly considered the inner message for signature validity, giving false impression that additional contents were also covered. From version 91.4.1, only top level MIME part signature is considered

Related
Detection
Refs
ReporterTitlePublishedViews
Family
altlinux
ALT Linux
Security fix for the ALT Linux 10 package thunderbird version 91.4.1-alt1
27 Dec 202100:00
–altlinux
alpinelinux
AlpineLinux
CVE-2021-4126
22 Dec 202200:00
–alpinelinux
astralinux
AstraLinux
Astra Linux – Vulnerability in Thunderbird
14 Sep 202612:01
–astralinux
bdu_fstec
BDU FSTEC
Mozilla Thunderbird Spamming
4 Oct 202200:00
–bdu_fstec
cnnvd
CNNVD
Mozilla Thunderbird 安全漏洞
20 Dec 202100:00
–cnnvd
cve
CVE
CVE-2021-4126
22 Dec 202200:00
–cve
cvelist
Cvelist
CVE-2021-4126
22 Dec 202200:00
–cvelist
debian
Debian
[SECURITY] [DLA 2874-1] thunderbird security update
4 Jan 202210:10
–debian
debian
Debian
[SECURITY] [DSA 5034-1] thunderbird security update
2 Jan 202217:01
–debian
debiancve
Debian CVE
CVE-2021-4126
22 Dec 202200:00
–debiancve
Rows per page
NVD
Node
mozillathunderbirdRange<91.4.1

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17 Jun 2026 04:19Current
CVSS 3.16.5
EPSS0.00444
SSVC
17