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Since Microsoft acknowledged the existence of two actively exploited zero-day vulnerabilities in Exchange Server, security experts were quick to point out that the company was providing bad advice in response.
Microsoft has updated the mitigation for the latest Exchange zero-day vulnerabilities tracked as CVE-2022-41040 and CVE-2022-41082, also referred to ProxyNotShell.
Microsoft says state-sponsored hackers likely exploited the recently disclosed zero-day vulnerabilities in Exchange servers.
While organizations wait for an official patch for the two zero-day flaws in Microsoft Exchange, they should scan their networks for signs of exploitation and apply these mitigations.
Microsoft has issued a security notice about two zero-day vulnerabilities with its own Microsoft Exchange Server. Versions 2013, 2016 and 2019 of the software are affected.