Memory safety bugs present in Firefox 141 and Thunderbird 141. 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 < 142 and Thunderbird < 142.
History

Wed, 20 Aug 2025 16:15:00 +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, 19 Aug 2025 20:45:00 +0000

Type Values Removed Values Added
Description Memory safety bugs present in Firefox 141 and Thunderbird 141. 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 < 142 and Thunderbird < 142.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2025-08-19T20:33:57.516Z

Updated: 2025-08-21T03:55:07.210Z

Reserved: 2025-08-19T15:56:10.269Z

Link: CVE-2025-9187

cve-icon Vulnrichment

Updated: 2025-08-20T14:04:13.909Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2025-08-19T21:15:31.303

Modified: 2025-08-20T16:15:47.687

Link: CVE-2025-9187

cve-icon Redhat

No data.