Multiple vulnerabilities in Mozilla Thunderbird ESR

Description

Multiple vulnerabilities were found in Mozilla Thunderbird ESR. Malicious users can exploit these vulnerabilities to bypass security restrictions, cause denial of service.

Below is a complete list of vulnerabilities:

1. Security vulnerability can be exploited to bypass security restrictions.
2. Denial of service vulnerability in POP3 and SMTP NTLM authentication can be exploited remotely to cause denial of service.

Original advisories

• MFSA2026-115

Exploitation

Related products

• Mozilla-Thunderbird-ESR

CVE list

• CVE-2026-113470
  high
• CVE-2026-113866
  high
• CVE-2026-113867
  unknown
• CVE-2026-113868
  high

Read more

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