CVE-2026-72943: Windows Deployment Services Remote Code Execution Vulnerability
Use after free in Windows Deployment Services allows an authorized attacker to execute code over a network.
Other sources
Windows Deployment Services Remote Code Execution Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.2.9200.26349Patch KB5123065 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33438Patch KB5122871 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.14393.9512Patch KB5123099 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.3.9600.23397Patch KB5123066 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5622Patch KB5122882 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.9245Patch KB5122876
Event History
Frequently Asked Questions
What level of access does an attacker need to exploit this issue?
An attacker must be authorized and have low-level privileges. Exploitation can be performed over a network and does not require user interaction.
Which environments should be prioritized for assessment?
Assess systems running Windows Deployment Services on the listed Windows 10 and Windows Server versions, including Windows Server 2012, 2012 R2, 2016, 2019, 2022, and 2025. The provided data does not identify whether installations without Windows Deployment Services enabled are affected.
How difficult is exploitation expected to be?
The attack complexity is rated high, indicating exploitation requires conditions beyond simply reaching the service over the network. Successful exploitation could affect confidentiality, integrity, and availability at a high level.