Memory safety bugs in Firefox ESR 115.35.0/140.10.0 & 150.0.0 (fixed 150.0.1)
CVE-2026-7322 Published on April 28, 2026
Memory safety bugs fixed in Thunderbird ESR 140.10.1 and Thunderbird 150.0.1
Memory safety bugs present in Thunderbird ESR 140.10.0 and Thunderbird 150.0.0. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 150.0.1, Firefox ESR 140.10.1, Firefox ESR 115.35.1, Thunderbird 150.0.1, and Thunderbird 140.10.1.
Vulnerability Analysis
CVE-2026-7322 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be low. considered to have a small impact on confidentiality and integrity and availability.
Weakness Types
What is a Buffer Overflow Vulnerability?
The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.
CVE-2026-7322 has been classified to as a Buffer Overflow vulnerability or weakness.
What is a Dangling pointer Vulnerability?
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
CVE-2026-7322 has been classified to as a Dangling pointer vulnerability or weakness.
Products Associated with CVE-2026-7322
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Affected Versions
Mozilla Firefox:- Version 115.35.1, <= 115.* is unaffected.
- Version 140.10.1, <= 140.* is unaffected.
- Version 150.0.1, <= * is unaffected.
- Version 140.10.1, <= 140.* is unaffected.
- Version 150.0.1, <= * is unaffected.