Microsoft has released a security advisory to address a critical vulnerability in Internet Explorer. A remote attacker could exploit this vulnerability to take control of an affected system. According to the advisory, “Microsoft is aware of limited targeted attacks.” CISA encourages users and administrators to review Microsoft’s Advisory ADV20001 and CERT/CC's Vulnerability Note VU#338824 for more information, implement workarounds, and apply updates when available. Consider using Microsoft Edge or an alternate browser until patches are made available. Read the advisory at CISA.