Windows Subsystem for Linux
CVE-2018-8337 — Windows Subsystem for Linux Security Feature Bypass Vulnerability
Executive Summary
A security feature bypass vulnerability exists when Windows Subsystem for Linux improperly handles case sensitivity. An attacker who successfully exploited this vulnerability could replace or delete arbitrary files as a low privilege user. A attacker could exploit this vulnerability by running a specially crafted application. The update addresses the vulnerability by correcting how Windows Subsystem for Linux handles case sensitivity.
Overview
5.3
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
N/A
MS Exploit Likelihood
CVSS Vector
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
Low
INTEGRITY
Low
AVAILABILITY
Low
EXPLOIT CODE MATURITY
Proof-of-Concept
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 4.8
EPSS Score
0.0147
probability of exploitation in the next 30 days
0.71468 percentile - updated 2026-08-14
View on FIRST.org
Affected Products
3 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows 10 Version 1709 for 32-bit Systems | 4457142 (Security Update) |
Important | Security Feature Bypass | Yes |
| Windows 10 Version 1709 for x64-based Systems | 4457142 (Security Update) |
Important | Security Feature Bypass | Yes |
| Windows Server, version 1709 (Server Core Installation) | 4457142 (Security Update) |
Important | Security Feature Bypass | Yes |
Patches
1 patch
| Article | Type | Restart |
|---|---|---|
4457142 |
Security Update | Yes |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
Michael Weber of NCC Group
References
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