After the disclosure of Microsoft Exchange zero-days, MS Exchange Server team has released a script to determine if an install is vulnerable. Microsoft revealed that at least one China-linked APT group, tracked as HAFNIUM, chained these vulnerabilities to access on-premises Exchange servers to access email accounts, and install backdoors to maintain access to victim environments. The US Cybersecurity and Infrastructure Security Agency (CISA) has issued the Emergency Directive 21-02 in response to the disclosure.”]
Source: https://securityaffairs.co/wordpress/115324/security/microsoft-exchange-server-audit-tool.html