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.
Metrics
Affected Vendors & Products
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Advisories
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Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Wed, 30 Sep 2026 17:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | 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 |
|
Wed, 30 Sep 2026 17:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Heap buffer overflow opening large email | |
| References |
|
Projects
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MITRE
Status: PUBLISHED
Assigner: mozilla
Published:
Updated: 2026-09-30T17:19:56.134Z
Reserved: 2026-09-30T17:15:06.146Z
Link: CVE-2026-103500
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-09-30T18:18:18.120
Modified: 2026-09-30T18:18:18.120
Link: CVE-2026-103500
Redhat
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OpenCVE Enrichment
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Weaknesses
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