On a dark web forum, an alleged Remote Code Execution (RCE) 0day exploit targeting Office 2013, 2016, 2019, and Office 365 has surfaced for sale. The threat actor claims the exploit has been rigorously tested on various Windows operating systems, including Windows 7, 8, 10, and 11. This exploit poses a significant risk as it could potentially allow attackers to execute arbitrary code on affected systems, compromising their security. The asking price for this exploit is set at $200,000, reflecting its perceived value and potential impact on Microsoft Office users.