CVE-2026-69454

Microsoft Azure Attestation service and Device Health Attestation Service Information Disclosure Vulnerability

CVE-2026-69454 is fixed in 6 products on 1 platform, first by KB5126651, released October 13, 2026. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.5

Important

Exploitation

None reported

Exploitation Less Likely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0109

65th percentile

<p>Out-of-bounds read in Microsoft Azure Attestation service and Device Health Attestation Service allows an unauthorized attacker to disclose information over a network.</p>

Where it's fixed

Product	Fixed in	Fix	Released
Microsoft
Windows Server 2019	17763.9376	KB5126651	Oct 13, 2026
Windows Server 2019 (Server Core installation)	17763.9376	KB5126651	Oct 13, 2026
Windows Server 2022	20348.5761	KB5126655	Oct 13, 2026
Windows Server 2022 (Server Core installation)	20348.5761	KB5126655	Oct 13, 2026
Windows Server 2025	26100.33650	KB5126646	Oct 13, 2026
Windows Server 2025 (Server Core installation)	26100.33650	KB5126646	Oct 13, 2026

Details

Published
October 13, 2026
Weakness
Out-of-bounds Read
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69454

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