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The vulnerability of the Thunderbird email client, related to bypassing authentication through spamming, allows a hacker to execute arbitrary code.

🗓️ 21 May 2025 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec
 bdu_fstec
🔗 bdu.fstec.ru👁 5 Views

Thunderbird bypass via spam using X-Mozilla-External-Attachment-URL header enables code execution.

Related
Detection
Refs
Vulners
Node
mozillathunderbirdRange<128.10.1
OR
mozillathunderbirdRange<138.0.1

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04 Mar 2026 00:00Current
7.3High risk
Vulners AI Score7.3
CVSS 26.4
CVSS 36.5
EPSS0.00363
5