Description
When reading SMTP server status codes, Thunderbird writes an integer value to a position on the stack that is intended to contain just one byte. Depending on processor architecture and stack layout, this leads to stack corruption that may be exploitable. This vulnerability affects Thunderbird < 78.5.1.
References (2)
Core 2
Core References
Issue Tracking, Permissions Required, Vendor Advisory x_refsource_misc
https://bugzilla.mozilla.org/show_bug.cgi?id=1677338
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2020-53/
Scores
CVSS v3
8.8
EPSS
0.0038
EPSS Percentile
59.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Details
CWE
CWE-787
Status
published
Products (1)
mozilla/thunderbird
< 78.5.1
Published
Dec 09, 2020
Tracked Since
Feb 18, 2026