Debian/thunderbird: high 7.4
A malicious mail server could send malformed strings with negative lengths, causing the parser to read memory outside the buffer. If a mail server or connection to a mail server were compromised, an a
Action: Upgrade thunderbird to 1:140.9.0esr-1 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1:140.9.0esr-1 | - |
Fixed versions
| 1:140.9.0esr-1 |
Sources
- osv: DEBIAN-CVE-2026-4371#Debian:14/thunderbird
- https://security-tracker.debian.org/tracker/CVE-2026-4371
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