Microsoft security patch release for CVE-2026-62911
Security Patch Release
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Microsoft patched CVE-2026-62911 in Exchange Server 2016, Exchange Server 2019, and Exchange Server Subscription Edition (SE) during the August 2026 Patch Tuesday. The update closes a high-severity authentication bypass that could let an attacker take over user mailboxes and access email content and attachments. The release is urgent because exploit code is already reported online and exposed servers remain unpatched.
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Timeline
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01.09.2026 15:38 2 articles · 2h ago
Microsoft security patch release for CVE-2026-62911
Initial DisclosureMicrosoft issued security updates for CVE-2026-62911 in the August 2026 Patch Tuesday. The release addressed an authentication bypass in Exchange Server that could enable privilege elevation over the network.
Show sources
- Nearly 22,000 Microsoft Exchange servers vulnerable to hijack attacks — www.bleepingcomputer.com — 01.09.2026 15:38
- Nearly 22,000 Microsoft Exchange servers vulnerable to hijack attacks — www.bleepingcomputer.com — 01.09.2026 15:38