Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2025-3932

It was possible to craft an email that showed a tracking link as an attachment. If the user attempted to open the attachment, Thunderbird automatically accessed the link. The configuration to block remote content did not prevent that. Thunderbird has been fixed to no longer allow access to web pages listed in the X-Mozilla-External-Attachment-URL header of an email. This vulnerability affects Thunderbird < 128.10.1 and Thunderbird < 138.0.1.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 7.8%
CVSS Severity
CVSS v3 Score 6.5
Products affected by CVE-2025-3932


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