On March 2nd, Microsoft has releasedĀ emergency out-of-band security updatesĀ that address four zero-day issues (CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, and CVE-2021-27065) in all supported Microsoft Exchange versions that are actively exploited in the wild. The IT giant reported that at least one China-linked APT group, tracked asĀ HAFNIUM, chained these vulnerabilities to access on-premises Exchange servers to access email […]