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.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required
Impact Assessment
Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 3
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Mozilla Thunderbird
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
|
— |
140.17.0
|
|
Mozilla Thunderbird
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
|
141.0
|
153.4.0
|
|
Mozilla Thunderbird
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
|
154.0
|
157.0
|
References 4
https://bugzilla.mozilla.org/show_bug.cgi?id=2070267
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-101/
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-102/
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-103/
security@mozilla.org