A use-after-free can occur when events are fired for a "FontFace" object after the object has been already been destroyed while working with fonts. This results in a potentially exploitable crash. This vulnerability affects Firefox < 52, Firefox ESR < 45.8, Thunderbird < 52, and Thunderbird < 45.8.
History

Tue, 25 Nov 2025 18:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Vendors & Products Mozilla firefox Esr

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2018-06-11T21:00:00

Updated: 2024-08-05T14:55:35.918Z

Reserved: 2017-01-13T00:00:00

Link: CVE-2017-5402

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2018-06-11T21:29:04.107

Modified: 2025-11-25T17:50:16.803

Link: CVE-2017-5402

cve-icon Redhat

Severity : Critical

Publid Date: 2017-03-07T00:00:00Z

Links: CVE-2017-5402 - Bugzilla