What is the CVSS score of CVE-2025-29966?

CVE-2025-29966 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 2.3%.

Which versions of Remote Desktop are affected by CVE-2025-29966?

Organizations using Heap-based buffer overflow in Windows Remote Desktop face significant risk from CVE-2025-29966, a heap-based buffer overflow vulnerability rated CVSS 8.8.

How to fix or mitigate CVE-2025-29966?

Within 30 days: Identify all affected systems and apply vendor patches as part of regular patch cycle. If patching is delayed, consider network segmentation to limit exposure.

Remote Desktop CVE-2025-29966

HIGH

Heap-based Buffer Overflow (CWE-122)

2025-05-13 secure@microsoft.com

Microsoft Buffer Overflow Heap Overflow Remote Desktop Windows App Windows 10 1507 Windows 10 1607 Windows 10 1809 Windows 10 21h2 Windows 10 22h2 Windows 11 22h2 Windows 11 23h2 Windows 11 24h2 Windows Server 2008 Windows Server 2012 Windows Server 2016 Windows Server 2019 Windows Server 2022 Windows Server 2022 23h2 Windows Server 2025 Windows

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:41 vuln.today

CVE Published

May 13, 2025 - 17:15 nvd

HIGH 8.8

DescriptionCVE.org

Heap-based buffer overflow in Windows Remote Desktop allows an unauthorized attacker to execute code over a network.

AnalysisAI

Heap-based buffer overflow in Windows Remote Desktop allows an unauthorized attacker to execute code over a network. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-122. Heap-based buffer overflow in Windows Remote Desktop allows an unauthorized attacker to execute code over a network. Affected products include: Microsoft Remote Desktop, Microsoft Windows App, Microsoft Windows 10 1507, Microsoft Windows 10 1607, Microsoft Windows 10 1809.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.