Memory safety bugs present in Firefox 146 and Thunderbird 146. 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 affects Firefox < 147.
History

Tue, 13 Jan 2026 15:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-119
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 13 Jan 2026 14:00:00 +0000

Type Values Removed Values Added
Description Memory safety bugs present in Firefox 146 and Thunderbird 146. 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 affects Firefox < 147.
Title Memory safety bugs fixed in Firefox 147 and Thunderbird 147
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-01-13T14:26:03.378Z

Reserved: 2026-01-13T13:30:59.693Z

Link: CVE-2026-0892

cve-icon Vulnrichment

Updated: 2026-01-13T14:23:56.154Z

cve-icon NVD

Status : Received

Published: 2026-01-13T14:16:39.723

Modified: 2026-01-13T15:16:00.917

Link: CVE-2026-0892

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.