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CVE-2021-28480, CVE-2021-28481, CVE-2021-28482, CVE-2021-28483: Four Critical Microsoft Exchange Server Vulnerabilities Patched in April Patch Tuesday
One month after disclosing four zero-day vulnerabilities in Exchange Server, Microsoft addresses four additional vulnerabilities discovered by the National Security Agency (NSA). Background On April 13, as part of its April 2021 Patch Tuesday release, Microsoft addressed four critical vulnerabilities in Microsoft Exchange Server. The disclosure follows last month’s out-of-band (OOB) security update which addressed four zero-day vulnerabilities in Exchange Server that were exploited in the wild by an advanced persistent threat group known as…
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