What’s Vulnerable › Vulnerabilities

CVE-2019-17018

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-01-08 · updated 2026-06-17
• Weakness: CWE-200

Description

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

How to fix

Upgrade to a fixed version: Mozilla Firefox 72.0. Check the vendor advisory for mitigations.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1549394
• https://www.mozilla.org/security/advisories/mfsa2020-01/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1549394
• https://www.mozilla.org/security/advisories/mfsa2020-01/

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