Windows Desktop Bridge
CVE-2021-31185 — Windows Desktop Bridge Denial of Service Vulnerability
Executive Summary
None
Overview
5.5
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
None
INTEGRITY
None
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 4.8
EPSS Score
0.00648
probability of exploitation in the next 30 days
0.46148 percentile - updated 2026-06-21
View on FIRST.org
Affected Products
7 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows 10 Version 2004 for 32-bit Systems | 5003173 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 2004 for ARM64-based Systems | 5003173 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 2004 for x64-based Systems | 5003173 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 20H2 for 32-bit Systems | 5003173 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 20H2 for ARM64-based Systems | 5003173 (Security Update) |
Important | Denial of Service | Yes |
| Windows Server, version 2004 (Server Core installation) | 5003173 (Security Update) |
Important | Denial of Service | Yes |
| Windows Server, version 20H2 (Server Core Installation) | 5003173 (Security Update) |
Important | Denial of Service | Yes |
Patches
1 patch
| Article | Type | Restart |
|---|---|---|
5003173 |
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
References
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