CVE-2019-17018: Mozilla Firefox

Medium severity, CVSS 5.3. EPSS: 0.9% chance of exploitation in the next 30 days.

When in Private Browsing Mode on Windows 10, the Windows keyboard may retain word suggestions to improve the accuracy of the keyboard. This vulnerability affects Firefox < 72.

Affected products

• Mozilla Firefox: before 72.0 (fixed in 72.0)

Published 2020-01-08. Last modified 2026-06-17.