Vulnerability Instance

Security researcher Seb Patane reported an issue with the
Mozilla Maintenance Service on Windows. This issue allows unprivileged users to
local privilege escalation through the system privileges used by the service
when interacting with local malicious software. This allows the user to bypass
integrity checks leading to local privilege escalation. Local file system access
is necessary in order for this issue to be exploitable and it cannot be
triggered through web content.