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Microsoft published advisories for two information disclosure flaws affecting Windows Remote Desktop licensing functionality: CVE-2024-38258 in the Windows Remote Desktop Licensing Service and CVE-2022-21964 in the Remote Desktop Licensing Diagnoser. Both issues were classified as information disclosure vulnerabilities in Microsoft’s Security Update Guide and security portal.
The advisories indicate that separate components used to manage and troubleshoot Remote Desktop licensing exposed sensitive information, extending risk beyond core remote access services to supporting administrative infrastructure. Organizations using Windows Remote Desktop licensing features should review Microsoft’s guidance for the affected CVEs and apply relevant security updates to reduce exposure from unintended data disclosure.
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2 events from the most recent confirmed update back to the earliest known activity.
Microsoft published a Security Update Guide entry for CVE-2024-38258, an information disclosure vulnerability in the Windows Remote Desktop Licensing Service.
Microsoft published a Security Update Guide advisory for CVE-2022-21964, an information disclosure vulnerability in Remote Desktop Licensing Diagnoser.
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Microsoft disclosed and patched several **remote code execution** vulnerabilities affecting Windows Remote Desktop components, including **Remote Desktop Services** flaws tracked as `CVE-2025-21309`, `CVE-2025-24045`, and `CVE-2024-49123`. The issues were published through the Microsoft Security Response Center update guide and indicate continued security exposure in services commonly used for remote administration and application access across Windows environments. Microsoft also published a related **Windows Remote Desktop Licensing Service** remote code execution vulnerability, `CVE-2024-38263`, expanding the affected surface beyond core Remote Desktop Services. The cluster of advisories highlights the need for organizations to prioritize patching internet-exposed and internally accessible RDS infrastructure, review segmentation around remote access systems, and verify that all Windows servers running Remote Desktop roles and licensing components have the latest security updates applied.
Jul 12, 2026
Microsoft released fixes for two **Windows Remote Desktop Protocol (RDP)** information disclosure vulnerabilities, `CVE-2026-42908` and `CVE-2026-45639`, that allow a remote, unauthenticated attacker to trigger out-of-bounds reads and expose sensitive memory without user interaction. According to reporting on the June 9, 2026 security updates, `CVE-2026-42908` can disclose local memory addresses and weaken **ASLR**, while `CVE-2026-45639` can reveal process memory including credentials, session tokens, and protocol state data. Microsoft rated both flaws **Important** with **CVSS 7.5** and said exploitation was considered less likely at release, with no public exploits reported. The vulnerabilities affect a broad set of Windows platforms, including **Windows 10**, **Windows 11**, **Windows Server 2012 through 2025**, and Microsoft’s Remote Desktop client offerings for Windows desktop. The disclosures arrive amid continued scrutiny of the RDP ecosystem after earlier reports of severe Remote Desktop weaknesses, including `CVE-2025-29967` in **RD Gateway** and `CVE-2025-29966` and `CVE-2025-48817` in the **Windows Remote Desktop Client**, which were described as enabling remote code execution through heap overflow or path traversal conditions. Organizations were urged to prioritize patching internet-exposed RDP systems and strengthen access controls with VPNs, bastion hosts, strong authentication, and monitoring.
Jun 29, 2026
Microsoft published security advisories for multiple remote code execution vulnerabilities affecting **Remote Desktop Client**, **Remote Desktop Protocol**, and the **Remote Procedure Call (RPC) Runtime**. The referenced issues include `CVE-2025-58718` in the Remote Desktop Client, alongside earlier Microsoft advisories for `CVE-2022-21851` in the Remote Desktop Client, `CVE-2022-21893` in Remote Desktop Protocol, and `CVE-2022-21922` in the RPC Runtime. The advisories indicate continued security risk around core Windows remote access and interprocess communication components that are widely used in enterprise environments. For defenders, the common thread is exposure to **remote code execution** in services and clients tied to remote connectivity, making Microsoft’s security updates for these CVEs a priority for systems that rely on RDP and RPC functionality.
Jul 12, 2026