vulnerability
Red Hat: CVE-2020-26970: CVE-2020-26970 Mozilla: Stack overflow due to incorrect parsing of SMTP server response codes (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 9 | (AV:N/AC:M/Au:N/C:C/I:C/A:C) | Dec 9, 2020 | Dec 15, 2020 | Mar 27, 2026 |
Severity
9
CVSS
(AV:N/AC:M/Au:N/C:C/I:C/A:C)
Published
Dec 9, 2020
Added
Dec 15, 2020
Modified
Mar 27, 2026
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.
Solutions
redhat-upgrade-thunderbirdredhat-upgrade-thunderbird-debuginforedhat-upgrade-thunderbird-debugsource
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