Multiple vulnerabilities in Mozilla Thunderbird

Description

Multiple vulnerabilities were found in Mozilla Thunderbird. Malicious users can exploit these vulnerabilities to execute arbitrary code, gain privileges, cause denial of service, bypass security restrictions, spoof user interface.

Below is a complete list of vulnerabilities:

1. Memory safety vulnerability can be exploited to execute arbitrary code.
2. Privilege escalation vulnerability in the DOM can be exploited remotely to gain privileges.
3. Use-after-free vulnerability in the Audio/Video can be exploited to cause denial of service or execute arbitrary code.
4. Use-after-free vulnerability in the WebRTC can be exploited to cause denial of service or execute arbitrary code.
5. JIT miscompilation vulnerability in the JavaScript Engine can be exploited to cause denial of service.
6. Privilege escalation vulnerability in the Netmonitor component can be exploited remotely to gain privileges.
7. Same-origin policy bypass vulnerability in the Request Handling component can be exploited to bypass security restrictions.
8. Incorrect boundary conditions vulnerability in the Graphics component can be exploited to cause denial of service.
9. Spoofing vulnerability in the Downloads Panel component can be exploited to spoof user interface.

Original advisories

• MFSA2025-95

Related products

• Mozilla-Thunderbird

CVE list

• CVE-2025-14321
  critical
• CVE-2025-14322
  critical
• CVE-2025-14323
  critical
• CVE-2025-14324
  critical
• CVE-2025-14325
  high
• CVE-2025-14326
  critical
• CVE-2025-14327
  critical
• CVE-2025-14328
  critical
• CVE-2025-14329
  critical
• CVE-2025-14330
  critical
• CVE-2025-14331
  high
• CVE-2025-14332
  high
• CVE-2025-14333
  critical

Read more

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