Debian/thunderbird: critical 10
Sandbox escape due to incorrect boundary conditions in the Telemetry component in External Software. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148
Action: Upgrade thunderbird to 1:140.8.0esr-1~deb12u1 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1:140.8.0esr-1~deb12u1 | - |
Fixed versions
| 1:140.8.0esr-1~deb12u1 |
Sources
- osv: DEBIAN-CVE-2026-2776#Debian:12/thunderbird
- https://security-tracker.debian.org/tracker/CVE-2026-2776
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