CVE-2019-11751

Mozilla: Malicious code execution through command line parameters

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Severity

Critical

Red Hat Product Security

8.8

CVSS 3.0

Review impact separately from score.

Published · September 3, 2019

Updated · November 22, 2025

Description

Logging-related command line parameters are not properly sanitized when Firefox is launched by another program, such as when a user clicks on malicious links in a chat application. This can be used to write a log file to an arbitrary location such as the Windows 'Startup' folder. Note: this issue only affects Firefox on Windows operating systems.. This vulnerability affects Firefox < 69 and Firefox ESR < 68.1.

Statement

This vulnerability only affected Firefox on the Windows operating system. Firefox on Red Hat Enterprise Linux is not affected.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 8.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')