CVE-2016-5273: Mozilla Firefox

High severity, CVSS 8.8. EPSS: 1.8% chance of exploitation in the next 30 days.

The mozilla::a11y::HyperTextAccessible::GetChildOffset function in the accessibility implementation in Mozilla Firefox before 49.0 allows remote attackers to execute arbitrary code via a crafted web site.

Affected products

• Mozilla Firefox: up to and including 48.0.2

Published 2016-09-22. Last modified 2026-06-17.