Description
Memory safety bugs present in Firefox ESR 140.10.0, Thunderbird ESR 140.10.0, Firefox 150.0.0 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 and Firefox ESR 140.10.1.
Published: 2026-04-28
Score: 7.3 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

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Advisories

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History

Tue, 28 Apr 2026 17:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-119
CWE-787
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, 28 Apr 2026 15:45:00 +0000

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

Tue, 28 Apr 2026 14:30:00 +0000

Type Values Removed Values Added
Description Memory safety bugs present in Firefox ESR 140.10.0, Thunderbird ESR 140.10.0, Firefox 150.0.0 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 and Firefox ESR 140.10.1.
Title Memory safety bugs fixed in Firefox ESR 140.10.1, Thunderbird ESR 140.10.1, Firefox 150.0.1 and Thunderbird 150.0.1
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-04-28T16:42:12.498Z

Reserved: 2026-04-28T13:42:18.353Z

Link: CVE-2026-7323

cve-icon Vulnrichment

Updated: 2026-04-28T16:41:47.712Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-04-28T15:16:37.837

Modified: 2026-04-28T20:10:59.913

Link: CVE-2026-7323

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-28T15:30:34Z

Weaknesses