Windows Kernel
CVE-2018-8612 — Connected User Experiences and Telemetry Service Denial of Service Vulnerability
Executive Summary
A Denial Of Service vulnerability exists when Connected User Experiences and Telemetry Service fails to validate certain function values. An attacker who successfully exploited this vulnerability could deny dependent security feature functionality. To exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted application. The security update addresses the vulnerability by correcting how the Connected User Experiences and Telemetry Service validates certain function values.
Overview
4.7
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
More Likely
MS Exploit Likelihood
CVSS Vector
ATTACK VECTOR
Local
ATTACK COMPLEXITY
High
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
None
INTEGRITY
None
AVAILABILITY
High
Temporal Score: 4.7
EPSS Score
0.01424
probability of exploitation in the next 30 days
0.70559 percentile - updated 2026-08-14
View on FIRST.org
Affected Products
19 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows 10 Version 1607 for 32-bit Systems | 4471321 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 1607 for x64-based Systems | 4471321 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 1703 for 32-bit Systems | 4471327 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 1703 for x64-based Systems | 4471327 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 1709 for 32-bit Systems | 4471329 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 1709 for ARM64-based Systems | 4471329 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 1709 for x64-based Systems | 4471329 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 1803 for 32-bit Systems | 4471324 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 1803 for ARM64-based Systems | 4471324 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 1803 for x64-based Systems | 4471324 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 1809 for 32-bit Systems | 4471332 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 1809 for ARM64-based Systems | 4471332 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 1809 for x64-based Systems | 4471332 (Security Update) |
Important | Denial of Service | Yes |
| Windows Server 2016 | 4471321 (Security Update) |
Important | Denial of Service | Yes |
| Windows Server 2016 (Server Core installation) | 4471321 (Security Update) |
Important | Denial of Service | Yes |
| Windows Server 2019 | 4471332 (Security Update) |
Important | Denial of Service | Yes |
| Windows Server 2019 (Server Core installation) | 4471332 (Security Update) |
Important | Denial of Service | Yes |
| Windows Server, version 1709 (Server Core Installation) | 4471329 (Security Update) |
Important | Denial of Service | Yes |
| Windows Server, version 1803 (Server Core Installation) | 4471324 (Security Update) |
Important | Denial of Service | Yes |
Patches
5 patches
| Article | Type | Restart |
|---|---|---|
4471321 |
Security Update | Yes |
4471327 |
Security Update | Yes |
4471329 |
Security Update | Yes |
4471324 |
Security Update | Yes |
4471332 |
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
Wayne Low of Fortinet’s FortiGuard Labs
References
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