CVE-2019-11714: Mozilla Firefox

Critical severity, CVSS 9.8. EPSS: 1.7% chance of exploitation in the next 30 days.

Necko can access a child on the wrong thread during UDP connections, resulting in a potentially exploitable crash in some instances. This vulnerability affects Firefox < 68.

Affected products

• Mozilla Firefox: before 68.0 (fixed in 68.0)

Published 2019-07-23. Last modified 2026-06-17.