Debian/thunderbird: high 8.1
Memory safety bugs present in Firefox ESR 140.6, Thunderbird ESR 140.6, Firefox 146 and Thunderbird 146. Some of these bugs showed evidence of memory corruption and we presume that with enough effort
Action: Upgrade thunderbird to 1:140.7.0esr-1~deb12u1 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1:140.7.0esr-1~deb12u1 | - |
Fixed versions
| 1:140.7.0esr-1~deb12u1 |
Sources
- osv: DEBIAN-CVE-2026-0891#Debian:12/thunderbird
- https://security-tracker.debian.org/tracker/CVE-2026-0891
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