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Announcing Period 2 Exchange 2016/2019 Extended Security Update (ESU) program (opens in new tab)

Covered by 5 sources See all sources covering this story including Help Net Security, lemondeinformatique.fr

Covered in 5 articles

Help Net Security·

Unpatched Microsoft Exchange Server vulnerability exploited (CVE-2026-42897)

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csoonline.com·

Exchange Server zero-day vulnerability can be triggered by opening a malicious email

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Petri IT Knowledgebase·

Microsoft’s June 2026 Exchange Server Updates Fix OWA XSS Vulnerability

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In other languages

lemondeinformatique.fr·

Les serveurs Exchange on premise frappés par un exploit zero-day

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Borns IT- und Windows-Blog·

Exchange Server: Sicherheitsupdates Juni 2026

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