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CVE-2026-2792

🚨 CRITICAL

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...

Published
Feb 24, 2026
Last Modified
Feb 25, 2026
Views
5
Bookmarks
0

Description

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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, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.

Affected Products (4)

mozilla - firefox

Version: *

mozilla - firefox

Version: *

mozilla - thunderbird

Version: *

mozilla - thunderbird

Version: *

CVSS Scores

CVSS 3.1 9.8
9.8
CRITICAL
CVSS 2.0 9.8

References

bugzilla.mozilla.org www.mozilla.org www.mozilla.org www.mozilla.org www.mozilla.org

Additional Information

Source
security@mozilla.org
State
Modified

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