CVE-2017-7828
Mozilla: Use-after-free of PressShell while restyling layout (MFSA 2017-25)
Severity
ImportantRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · November 15, 2017
Updated · November 26, 2025
Description
A use-after-free vulnerability can occur when flushing and resizing layout because the "PressShell" object has been freed while still in use. This results in a potentially exploitable crash during these operations. This vulnerability affects Firefox < 57, Firefox ESR < 52.5, and Thunderbird < 52.5.
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 · 9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-416 · Use After Free