CVE-2025-3875

HighCVSS 7.5/10Last modified Jun 17, 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 spoofed@example.com as the actual address. This vulnerability was fixed in Thunderbird 128.10.1 and Thunderbird 138.0.1.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-290

Affected software

No affected versions have been published.

Timeline

Published: May 14, 2025
Last modified: Jun 17, 2026
NVD status: Modified

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