Multiple vulnerabilities in Mozilla Thunderbird ESR

Description

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

Below is a complete list of vulnerabilities:

1. Use-after-free vulnerability in MediaTrackGraph can be exploited remotely to execute arbitrary code and cause denial of service
2. Out of bounds read/write vulnerability in WebGL can be exploited remotely to execute arbitrary code and cause denial of service
3. Security bypass vulnerability in privileged browser process can be exploited to bypass security restrictions and obtain sensitive information
4. Security bypass vulnerability in JavaScript can be exploited to modify non-writable properties and bypass security restrictions
5. Cross site scripting vulnerability due to improper MIME-type enforcement in OBJECT tag can be exploited remotely to execute arbitrary code
6. Insufficient escaping in the “Copy as cURL” feature vulnerability can be exploited remotely to execute arbitrary code
7. Memory corruption vulnerability in Mozilla Products can be exploited remotely to execute arbitrary code and cause denial of service

Original advisories

• MFSA2025-85

Related products

• Mozilla-Thunderbird-ESR

CVE list

• CVE-2025-11708
  critical
• CVE-2025-11709
  critical
• CVE-2025-11710
  critical
• CVE-2025-11711
  high
• CVE-2025-11712
  high
• CVE-2025-11713
  critical
• CVE-2025-11714
  critical
• CVE-2025-11715
  critical

Read more

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