Serious vulnerability threatens tens of thousands of Exchange servers
A serious vulnerability was recently discovered in Exchange Server 2016, Exchange Server 2016, and Exchange Server Subscription Edition (SE). The vulnerability is designated CVE-2026-62911 and can be exploited by hackers to gain full access to affected systems, according to Bleeping Computer . Microsoft has released security patches to address the vulnerability as part of its August 2026 Patch…
A critical vulnerability, CVE-2026-62911, has been identified in Exchange Server 2016, Exchange Server 2016 Subscription Edition, and Exchange Server. This flaw allows cybercriminals to completely compromise affected systems, as reported by Bleeping Computer. Although Microsoft has provided security patches through its August 2026 Patch Tuesday update, there remain 21,899 servers vulnerable to attack, according to The Shadowserver Foundation.
The regions with the most unpatched servers are the United States and Germany, according to The Shadowserver Foundation. The Netherlands National Cyber Security Centre and other relevant authorities have strongly advised administrators to apply the latest patches without delay.
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