Windows Active Directory
CVE-2026-50682 — Active Directory Denial of Service Vulnerability
Executive Summary
Out-of-bounds read in Windows Active Directory allows an authorized attacker to deny service over a network.
Overview
7.1
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Exploitation Unlikely
MS Exploit Likelihood
CVSS Vector
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
Low
INTEGRITY
None
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 6.2
EPSS Score
No EPSS score available for this CVE.
View on FIRST.orgAffected Products
15 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows 10 Version 21H2 for 32-bit Systems | 5099539 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 21H2 for ARM64-based Systems | 5099539 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 21H2 for x64-based Systems | 5099539 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 22H2 for 32-bit Systems | 5099539 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 22H2 for ARM64-based Systems | 5099539 (Security Update) |
Important | Denial of Service | Yes |
| Windows 10 Version 22H2 for x64-based Systems | 5099539 (Security Update) |
Important | Denial of Service | Yes |
| Windows 11 Version 24H2 for ARM64-based Systems | 5101650 (Security Update) |
Important | Denial of Service | Yes |
| Windows 11 Version 24H2 for x64-based Systems | 5101650 (Security Update) |
Important | Denial of Service | Yes |
| Windows 11 Version 25H2 for ARM64-based Systems | 5101650 (Security Update) |
Important | Denial of Service | Yes |
| Windows 11 Version 25H2 for x64-based Systems | 5101650 (Security Update) |
Important | Denial of Service | Yes |
| Windows 11 Version 26H1 for ARM64-based Systems | 5101649 (Security Update) |
Important | Denial of Service | Yes |
| Windows 11 version 26H1 for x64-based Systems | 5095051 (Security Update) |
Important | Denial of Service | Yes |
| Windows Server 2022 | 5099540 (Security Update) |
Important | Denial of Service | Yes |
| Windows Server 2025 | 5099536 (Security Update) |
Important | Denial of Service | Yes |
| Windows Server 2025 (Server Core installation) | 5099536 (Security Update) |
Important | Denial of Service | Yes |
Patches
6 patches
| Article | Type | Restart |
|---|---|---|
5099539 |
Security Update | Yes |
5101650 |
Security Update | Yes |
5101649 |
Security Update | Yes |
5095051 |
Security Update | Yes |
5099540 |
Security Update | Yes |
5099536 |
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
WARP and ACS teams at Microsoft
References
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