CVEvulnerability

CVE-2026-103500

6.1 MEDIUM Published 2026-09-30 Modified 2026-10-16 Official page ↗
Status
Modified
Published
2026-09-30
Last modified
2026-10-16
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.1 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
6.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Weaknesses
CWE-122, CWE-787

Description

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.

Affected configurations

• mozilla thunderbird (< 140.17.0) • mozilla thunderbird (>= 141.0 < 153.4.0) • mozilla thunderbird (>= 154.0 < 157.0)

Related

Weakness · CWE (2)

  • CWE-122 Heap-based Buffer Overflow weakness
  • CWE-787 Out-of-bounds Write weakness

References