CVE-2026-66802
Windows Device Health Attestation (DHA) Remote Code Execution vulnerability
MSRC advisory August 11, 2026
Alert details
- Source feed
- Microsoft MSRC
- CVE ID
- CVE-2026-66802
- Affected products
- Windows Device Health Attestation (DHA) Remote Code Execution · Microsoft Windows Device Health Attestation (DHA) Remote Code Execution · Microsoft
What happened
Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Azure Attestation service and Device Health Attestation Service allows an unauthorized attacker to execute code over a network.
What it means for your business
Windows Device Health Attestation (DHA) Remote Code Execution vulnerability (CVE-2026-66802) was added to Microsoft’s security update guidance. Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Azure Attestation service and Device Health Attestation Service allows an unauthorized attacker to execute code over a network. If you need help checking exposure, call (864) 335-9223.
Sources
Related briefs
Windows Device Health Attestation (DHA) Remote Code Execution vulnerability
Windows Device Health Attestation (DHA) Remote Code Execution vulnerability (CVE-2026-71331) was added to Microsoft’s security update guidance. Integer overflow or wraparound in Microsoft Azure Attestation service and Device Health Attestation Service allows an unauthorized attacker to execute code over a network. If you need help checking exposure, call (864) 335-9223.
Microsoft PowerShell Security Feature Bypass vulnerability
Microsoft PowerShell Security Feature Bypass vulnerability (CVE-2026-70338) was added to Microsoft’s security update guidance. Acknowledgement Updated If you need help checking exposure, call (864) 335-9223.
Microsoft Windows Cross Device Service Elevation of Privilege vulnerability
Microsoft Windows Cross Device Service Elevation of Privilege vulnerability (CVE-2026-66804) was added to Microsoft’s security update guidance. Acknowledgement Updated If you need help checking exposure, call (864) 335-9223.
Windows iSCSI Target Service Remote Code Execution vulnerability
Windows iSCSI Target Service Remote Code Execution vulnerability (CVE-2026-65791) was added to Microsoft’s security update guidance. Acknowledgement Updated If you need help checking exposure, call (864) 335-9223.
Need help patching?
PremierePC monitors KEV alerts for managed clients and helps teams prioritize remediation before attackers do.