CVE-2016-9072: Mozilla Firefox

High severity, CVSS 7.5. EPSS: 1.3% chance of exploitation in the next 30 days.

When a new Firefox profile is created on 64-bit Windows installations, the sandbox for 64-bit NPAPI plugins is not enabled by default. Note: This issue only affects 64-bit Windows. 32-bit Windows and other operating systems are unaffected. This vulnerability affects Firefox < 50.

Affected products

• Mozilla Firefox: before 50.0 (fixed in 50.0)

Published 2018-06-11. Last modified 2026-06-17.