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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2025-3875

Sender Spoofing via Malformed From Header in Thunderbird

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Status
Published
Published
Updated
Assigning organization
mozilla

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Mozilla Thunderbird

  • 128.10.1 to ≤ 128.*unaffected
  • 138.0.1 to ≤ *unaffected

References