ReviewHigh

CVE-2026-71331

Microsoft Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation)

Integer overflow or wraparound in Windows Device Health Attestation (DHA) allows an unauthorized attacker to execute code over a network.

PRIORITY ASSESSMENT

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability-

Technical severityCVSS 8.1

Integer overflow or wraparound in Windows Device Health Attestation (DHA) allows an unauthorized attacker to execute code over a network.

Product: Microsoft Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation)
Affected versions: >= 10.0.17763.0 < 10.0.17763.9121, >= 10.0.20348.0 < 10.0.20348.5499, >= 10.0.26100.0 < 10.0.26100.33296, < 10.0.20348.5440
Fixed versions: Verify the fixed release separately for each affected product line

Confirm exposure before applying a vendor-supported change.

1
Identify
Confirm that Microsoft Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation) and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.