AUGUST 4, 2026
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Case File

CVE-2019-9801

MEDIUM · CVSS 5.3 EPSS 1.31%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2019-04-26 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

CVE
CVE-2019-9801
Severity
MEDIUM
CVSS
5.3
EPSS
1.31%
Windows Firefox

Original NVD Description

Firefox will accept any registered Program ID as an external protocol handler and offer to launch this local application when given a matching URL on Windows operating systems. This should only happen if the program has specifically registered itself as a "URL Handler" in the Windows registry. *Note: This issue only affects Windows operating systems. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.