Vulnerability in Mozilla Thunderbird
CVE-2021-29956
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.008 (55.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 55.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Mozilla Thunderbird — versions unspecified
Weakness classification (CWE)
References
- www.mozilla.org/security/advisories/mfsa2021-22/ (Release Notes, Vendor Advisory)
- bugzilla.mozilla.org/show_bug.cgi (Exploit, Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-29956?
- CVE-2021-29956 is a medium-severity vulnerability in Mozilla Thunderbird, classified under Cleartext Storage of Sensitive Information. CVSS score: 4.3/10. Published 2021-06-24.
- How severe is CVE-2021-29956?
- Medium severity. CVSS v3 base score is 4.3 out of 10.