Debian/thunderbird: critical 10
Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and T
Action: Upgrade thunderbird to 1:140.9.0esr-1~deb12u1 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1:140.9.0esr-1~deb12u1 | - |
Fixed versions
| 1:140.9.0esr-1~deb12u1 |
Sources
- osv: DEBIAN-CVE-2026-4689#Debian:12/thunderbird
- https://security-tracker.debian.org/tracker/CVE-2026-4689
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