CVE-2026-103500 (GCVE-0-2026-103500)
Vulnerability from cvelistv5
Published
2026-09-30 17:15
Modified
2026-10-21 17:24
Severity ?
6.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Summary
An attacker could cause a heap buffer overflow by getting a user to open an email that is greater than or equal to 2GB in size. This vulnerability was fixed in Thunderbird 157, Thunderbird 140.17, and Thunderbird 153.4.
References
Impacted products
Vendor Product Version
Mozilla Thunderbird Unaffected: 140.17
Unaffected: 153.4
Unaffected: 157
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