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PatchSiren cyber security CVE debrief

CVE-2026-69443 Microsoft CVE debrief

CVE-2026-69443 is a high-severity vulnerability in Windows Device Health Attestation (DHA) that allows unauthorized attackers to disclose information over a network. The vulnerability has a CVSS score of 7.5 and is classified as HIGH. Microsoft has released a patch for this vulnerability, and defenders should prioritize updating affected systems. Affected systems include Windows 10 1809, Windows Server 2019, Windows Server 2022, and Windows Server 2025. Defenders should review DHA configuration and ensure it is properly secured to prevent potential exploitation. The CVE record and NVD entry provide details on the vulnerability, including its CVSS score and affected systems.

Vendor
Microsoft
Product
Windows 10 Version 1809
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-08
Original CVE updated
2026-09-17
Advisory published
2026-09-08
Advisory updated
2026-09-17

Who should care

Defenders responsible for Windows systems, particularly those with DHA enabled, should prioritize updating affected systems to prevent potential information disclosure.

Why it matters

CVE-2026-69443 is a high-severity vulnerability in Windows Device Health Attestation (DHA) that allows unauthorized attackers to disclose information over a network. Defenders should prioritize updating affected systems and review DHA configuration to prevent potential exploitation.

  • Potential information disclosure over the network
  • Requires patching of affected Windows systems
  • Defenders should review DHA configuration and ensure it is properly secured

Technical summary

CVE-2026-69443 is an out-of-bounds read vulnerability in Windows Device Health Attestation (DHA) that allows unauthorized attackers to disclose information over a network. The vulnerability has a CVSS score of 7.5 and is classified as HIGH. Affected systems include Windows 10 1809, Windows Server 2019, Windows Server 2022, and Windows Server 2025.

Defensive priority

Apply patches to affected Windows systems, particularly those with DHA enabled, to prevent potential information disclosure.

Recommended defensive actions

  • Apply patches to affected Windows systems
  • Review DHA configuration and ensure it is properly secured
  • Monitor system logs for potential exploitation attempts

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its CVSS score and affected systems. Microsoft has released a patch for this vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-69443 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-69443

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-69443 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-69443

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.