Windows DHCP Server Remote Code Execution Vulnerability
Summary
| CVE | CVE-2026-50685 |
|---|---|
| State | PUBLISHED |
| Assigner | microsoft |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-07-14 18:18:03 UTC |
| Updated | 2026-07-21 19:55:20 UTC |
| Description | Double free in Windows DHCP Server allows an authorized attacker to execute code over a network. |
Risk And Classification
Primary CVSS: v3.1 7.5 HIGH from [email protected]
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.006180000 probability, percentile 0.456440000 (date 2026-07-19)
Problem Types: CWE-415 | CWE-415 CWE-415: Double Free
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | CNA | CVSS | 7.5 | HIGH | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
HighPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Microsoft | Windows 10 1607 | All | All | All | All |
| Operating System | Microsoft | Windows 10 1607 | All | All | All | All |
| Operating System | Microsoft | Windows 10 1809 | All | All | All | All |
| Operating System | Microsoft | Windows 10 1809 | All | All | All | All |
| Operating System | Microsoft | Windows Server 2012 | - | All | All | All |
| Operating System | Microsoft | Windows Server 2012 | r2 | All | All | All |
| Operating System | Microsoft | Windows Server 2016 | All | All | All | All |
| Operating System | Microsoft | Windows Server 2019 | All | All | All | All |
| Operating System | Microsoft | Windows Server 2022 | All | All | All | All |
| Operating System | Microsoft | Windows Server 2025 | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Microsoft | Windows 10 Version 1607 | affected 10.0.14393.0 10.0.14393.9339 custom | 32-bit Systems, x64-based Systems |
| CNA | Microsoft | Windows 10 Version 1809 | affected 10.0.17763.0 10.0.17763.9020 custom | 32-bit Systems, x64-based Systems |
| CNA | Microsoft | Windows Server 2012 | affected 6.2.9200.0 6.2.9200.26226 custom | x64-based Systems |
| CNA | Microsoft | Windows Server 2012 Server Core Installation | affected 6.2.9200.0 6.2.9200.26226 custom | x64-based Systems |
| CNA | Microsoft | Windows Server 2012 R2 | affected 6.3.9600.0 6.3.9600.23291 custom | x64-based Systems |
| CNA | Microsoft | Windows Server 2012 R2 Server Core Installation | affected 6.3.9600.0 6.3.9600.23291 custom | x64-based Systems |
| CNA | Microsoft | Windows Server 2016 | affected 10.0.14393.0 10.0.14393.9339 custom | x64-based Systems |
| CNA | Microsoft | Windows Server 2016 Server Core Installation | affected 10.0.14393.0 10.0.14393.9339 custom | x64-based Systems |
| CNA | Microsoft | Windows Server 2019 | affected 10.0.17763.0 10.0.17763.9020 custom | x64-based Systems |
| CNA | Microsoft | Windows Server 2022 | affected 10.0.20348.0 10.0.20348.5386 custom | x64-based Systems |
| CNA | Microsoft | Windows Server 2025 | affected 10.0.26100.0 10.0.26100.33158 custom | x64-based Systems |
| CNA | Microsoft | Windows Server 2025 Server Core Installation | affected 10.0.26100.0 10.0.26100.33158 custom | x64-based Systems |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50685 | [email protected] | msrc.microsoft.com | Patch, Vendor Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.