vulnerability
Ubuntu: USN-7663-1 (CVE-2025-3875): Thunderbird vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:N/C:C/I:N/A:N) | May 14, 2025 | Jul 23, 2025 | Apr 15, 2026 |
Severity
8
CVSS
(AV:N/AC:L/Au:N/C:C/I:N/A:N)
Published
May 14, 2025
Added
Jul 23, 2025
Modified
Apr 15, 2026
Description
Thunderbird parses addresses in a way that can allow sender spoofing in case the server allows an invalid From address to be used. For example, if the From header contains an (invalid) value "Spoofed Name ", Thunderbird treats [email protected] as the actual address. This vulnerability was fixed in Thunderbird 128.10.1 and Thunderbird 138.0.1.
Solution
ubuntu-upgrade-thunderbird
References
Rapid7 Labs
2026 Global Threat Landscape Report
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