Memory Pressure-Induced Use-After-Free Vulnerability in Firefox ESR, Thunderbird, and Firefox

Memory Pressure-Induced Use-After-Free Vulnerability in Firefox ESR, Thunderbird, and Firefox

CVE-2023-6859 · HIGH Severity

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

A use-after-free condition affected TLS socket creation when under memory pressure. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.

Learn more about our Web Application Penetration Testing UK.