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CVE-2026-12326

Firefox

Description

Memory safety bugs present in Firefox 151 and Thunderbird 151. 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 152 and Thunderbird 152.

CVSS 7.3EPSS 0.363%Risk 0.75
View source
Published
2026-06-16 13:16:33
Affected versions
<152
Type
Web application
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L