CVE-2020-26970
thunderbird - security update
8.8
HIGH
CVSS 3.1
EPSS 0.38%
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.
How to fix CVE-2020-26970
To remediate CVE-2020-26970, upgrade the affected package to a fixed version below.
- —upgrade to 1:78.5.1-1 or later
- —upgrade to 1:78.5.1-1~deb9u1 or later
- —upgrade to 1:78.5.1-1~deb10u1 or later
Is CVE-2020-26970 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 1:78.5.1-1
- from 0, < 1:78.5.1-1~deb9u1
- from 0, < 1:78.5.1-1~deb10u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |