Unpatched ScreenConnect servers open to attack (CVE-2026-3564)

Unpatched ScreenConnect servers open to attack (CVE-2026-3564) Help Net Security

Early report Major update Updated Mar 20, 2026, 9:37 AM UTC

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What changed

New report from Watch coverage #99: CVE Critical 7h ago.

First seen Mar 20, 2026, 9:37 AM UTC Latest source Mar 20, 2026, 9:37 AM UTC

Update 1 7h ago

Watch coverage #99: CVE Critical •published Mar 20, 2026, 9:37 AM UTC •fetched Mar 20, 2026, 3:50 PM UTC