CVE Database›CVE-2017-7802

CVE-2017-7802

Mozilla: Use-after-free resizing image elements (MFSA 2017-19)

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Severity

Important

Red Hat Product Security

9.8

CVSS 3.0

Review impact separately from score.

Published · August 8, 2017

Updated · November 26, 2025

Description

A use-after-free vulnerability can occur when manipulating the DOM during the resize event of an image element. If these elements have been freed due to a lack of strong references, a potentially exploitable crash may occur when the freed elements are accessed. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 9.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-416 · Use After Free