CVE-2021-29950

7.5 highEPSS 0.9%

High (7.5) in mozilla thunderbird. EPSS 0.9% chance of exploitation in the next 30 days.

Thunderbird unprotects a secret OpenPGP key prior to using it for a decryption, signing or key import task. If the task runs into a failure, the secret key may remain in memory in its unprotected state. This vulnerability affects Thunderbird < 78.8.1.

Severity

CVSS 3.1

7.5 high

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

EPSS: 0.9% chance of exploitation in the next 30 days; higher than 58% 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=1673239
https://www.mozilla.org/security/advisories/mfsa2021-17/
https://bugzilla.mozilla.org/show_bug.cgi?id=1673239
https://www.mozilla.org/security/advisories/mfsa2021-17/

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