Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. 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 < 148 and Firefox ESR < 140.8.
History

Tue, 24 Feb 2026 14:00:00 +0000

Type Values Removed Values Added
Description Memory safety bugs present in Firefox ESR 140.7, Thunderbird ESR 140.7, Firefox 147 and Thunderbird 147. 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 < 148 and Firefox ESR < 140.8.
Title Memory safety bugs fixed in Firefox ESR 140.8, Thunderbird ESR 140.8, Firefox 148 and Thunderbird 148
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-02-24T17:30:40.473Z

Reserved: 2026-02-19T15:06:37.841Z

Link: CVE-2026-2792

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-02-24T14:16:27.680

Modified: 2026-02-24T14:16:27.680

Link: CVE-2026-2792

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.