CVE-2021-29956

4.3 mediumEPSS 0.8%

Medium (4.3) in mozilla thunderbird. EPSS 0.8% chance of exploitation in the next 30 days.

OpenPGP secret keys that were imported using Thunderbird version 78.8.1 up to version 78.10.1 were stored unencrypted on the user's local disk. The master password protection was inactive for those keys. Version 78.10.2 will restore the protection mechanism for newly imported keys, and will automatically protect keys that had been imported using affected Thunderbird versions. This vulnerability affects Thunderbird < 78.10.2.

Severity

CVSS 3.1

4.3 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

EPSS: 0.8% chance of exploitation in the next 30 days; higher than 56% of CVEs (scores of 2026-10-31)
CWE: CWE-312
Published: 2021-06-24
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

mozilla:thunderbird

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1710290
https://www.mozilla.org/security/advisories/mfsa2021-22/
https://bugzilla.mozilla.org/show_bug.cgi?id=1710290
https://www.mozilla.org/security/advisories/mfsa2021-22/

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