Multiple vulnerabilities in Mozilla Thunderbird

Description

Multiple vulnerabilities were found in Mozilla Thunderbird. Malicious users can exploit these vulnerabilities to bypass security restrictions, perform cross-site scripting attack, execute arbitrary code, cause denial of service.

Below is a complete list of vulnerabilities:

1. Security vulnerability can be exploited to bypass security restrictions.
2. Cross-site scripting (XSS) vulnerability can be exploited to perform cross-site scripting attack.
3. Validation of untrusted input vulnerability can be exploited to bypass security restrictions.
4. Use after free vulnerability can be exploited to cause denial of service or execute arbitrary code.

Fiches de renseignement originales

• MFSA2025-55

Produits associés

• Mozilla-Thunderbird

Liste CVE

• CVE-2025-6424
  critical
• CVE-2025-6425
  warning
• CVE-2025-6429
  high
• CVE-2025-6430
  high

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