CVE-2026-45642: CWE-20: Improper Input Validation in Microsoft Windows 10 Version 1607
Improper input validation in Microsoft Azure Attestation service and Device Health Attestation Service allows an authorized attacker to perform spoofing with a physical attack.
AI Analysis
Technical Summary
This vulnerability involves improper input validation in Microsoft Azure Attestation and Device Health Attestation services on Windows 10 Version 1607 (build 10.0.14393.0). An authorized attacker with physical access could exploit this flaw to spoof attestation results. The CVSS 3.1 base score is 3.9, reflecting low severity with impact limited to integrity. Microsoft has released an official fix and manages remediation for this cloud-hosted service. No known exploits are reported in the wild.
Potential Impact
The vulnerability allows an authorized attacker with physical access to spoof attestation results, potentially compromising the integrity of device health attestations. There is no impact on confidentiality or availability. The overall severity is low (CVSS 3.9).
Mitigation Recommendations
An official fix is available from Microsoft. Since this is a cloud-hosted service, Microsoft manages the remediation server-side. Users should ensure their systems are updated according to Microsoft's guidance at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45642.
CVE-2026-45642: CWE-20: Improper Input Validation in Microsoft Windows 10 Version 1607
Description
Improper input validation in Microsoft Azure Attestation service and Device Health Attestation Service allows an authorized attacker to perform spoofing with a physical attack.
CVSS v3.1
Score 3.9low
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves improper input validation in Microsoft Azure Attestation and Device Health Attestation services on Windows 10 Version 1607 (build 10.0.14393.0). An authorized attacker with physical access could exploit this flaw to spoof attestation results. The CVSS 3.1 base score is 3.9, reflecting low severity with impact limited to integrity. Microsoft has released an official fix and manages remediation for this cloud-hosted service. No known exploits are reported in the wild.
Potential Impact
The vulnerability allows an authorized attacker with physical access to spoof attestation results, potentially compromising the integrity of device health attestations. There is no impact on confidentiality or availability. The overall severity is low (CVSS 3.9).
Mitigation Recommendations
An official fix is available from Microsoft. Since this is a cloud-hosted service, Microsoft manages the remediation server-side. Users should ensure their systems are updated according to Microsoft's guidance at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45642.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-12T20:33:35.156Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Is Cloud Service
- true
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45642","vendor":"Microsoft"}]
Threat ID: 6a284ce78dd33fbd85664ed5
Added to database: 06/09/2026, 17:27:03 UTC
Last enriched: 07/29/2026, 22:01:57 UTC
Last updated: 07/31/2026, 21:26:44 UTC
Views: 47
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