CVE-2026-71331: Windows Device Health Attestation (DHA) Remote Code Execution Vulnerability
Integer overflow or wraparound in Windows Device Health Attestation (DHA) allows an unauthorized attacker to execute code over a network.
Other sources
Windows Device Health Attestation (DHA) 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 10.0.20348.5499Fixed in 10.0.20348.5440Patch KB5120229 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.9121Patch KB5120238 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33296Fixed in 10.0.26100.33222Patch KB5120228
Event History
Frequently Asked Questions
What is the severity of CVE-2026-71331?
CVE-2026-71331 has a severity score of 8.1, indicating it is a high-risk vulnerability.
How do I fix CVE-2026-71331?
To mitigate CVE-2026-71331, users should apply the latest security updates provided by Microsoft for the affected software versions.
What systems are affected by CVE-2026-71331?
CVE-2026-71331 impacts Microsoft Windows Server 2025, 2019, 2022, Windows 10, Microsoft Azure Attestation service, and Device Health Attestation Service.
What type of vulnerability is CVE-2026-71331?
CVE-2026-71331 is classified as an Integer Overflow vulnerability, which allows unauthorized remote code execution.
What is the potential impact of CVE-2026-71331?
If exploited, CVE-2026-71331 could allow an unauthorized attacker to execute arbitrary code on affected systems via the network.