cve 2026 58546

CVE 2026 58546 is the tag for coverage of Microsoft's July 14, 2026 security update addressing a Windows Remote Desktop Client information-disclosure vulnerability. The reported flaw affects the RDP client side, not Windows devices simply configured to accept inbound RDP connections. An unauthenticated attacker could obtain data from a targeted machine over a network by exploiting an uninitialized resource. This archive focuses on the security impact and patching considerations for administrator workstations, help-desk endpoints, jump boxes, and systems used to open .rdp files. Use it to follow the available guidance and understand which Remote Desktop use cases require prompt attention.