Windows Modern Device Management (MDM)
CVE-2026-83657 — Windows Modern Device Management (MDM) Tampering Vulnerability
Executive Summary
Weak authentication in Windows Modern Device Management (MDM) allows an authorized attacker to perform tampering locally.
Overview
5.5
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
Exploitation Unlikely
MS Exploit Likelihood
CVSS Vector
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
None
INTEGRITY
High
AVAILABILITY
None
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 4.8
EPSS Score
No EPSS score available for this CVE.
View on FIRST.orgAffected Products
4 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows 10 Version 1809 for 32-bit Systems | 5126651 (Security Update) |
Important | Tampering | Yes |
| Windows 10 Version 1809 for x64-based Systems | 5126651 (Security Update) |
Important | Tampering | Yes |
| Windows Server 2019 | 5126651 (Security Update) |
Important | Tampering | Yes |
| Windows Server 2019 (Server Core installation) | 5126651 (Security Update) |
Important | Tampering | Yes |
Patches
1 patch
| Article | Type | Restart |
|---|---|---|
5126651 |
Security Update | Yes |
Exploits & PoC
No public exploit or PoC has been linked for this CVE yet. When available, references are sourced from public repositories and may be unverified or non-functional — review carefully before use.
Detection Rules
No public Sigma or Nuclei detection rule has been mapped to this CVE yet. Coverage is concentrated on exploited / high-profile vulnerabilities; check SigmaHQ for updates.
Acknowledgments
haowei yan & xiaozun tang
References
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