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.

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Fixes

Solution

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Workaround

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History

Tue, 16 Jun 2026 16:45:00 +0000

Type Values Removed Values Added
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. 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.
References

Tue, 16 Jun 2026 16:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-119
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 16 Jun 2026 15:00:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Mozilla thunderbird
Vendors & Products Mozilla
Mozilla firefox
Mozilla thunderbird

Tue, 16 Jun 2026 13:15:00 +0000


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-06-16T16:08:45.204Z

Reserved: 2026-06-15T15:08:21.967Z

Link: CVE-2026-12326

cve-icon Vulnrichment

Updated: 2026-06-16T15:48:43.540Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-06-16T13:16:33.380

Modified: 2026-06-16T14:51:31.350

Link: CVE-2026-12326

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-16T14:45:15Z

Weaknesses