Czech antivirus maker Avast has taken the extreme step of disabling a major component of its antivirus product after a security researcher found a dangerous vulnerability that put all of the company's users at risk.
https://www.zdnet.com/article/avast-disables-javascript-engine-in-its-antivirus-following-major-bug/
https://www.zdnet.com/article/avast-disables-javascript-engine-in-its-antivirus-following-major-bug/