CVE-2026-123387
Active Directory Domain Services Elevation of Privilege Vulnerability
Improper neutralization of special elements used in a command ('command injection') in Windows Active Directory allows an authorized attacker to elevate privileges over a network.
Fixes and workarounds
Fix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: microsoftAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| Windows 10 Version 1607 Microsoft Platforms: 32-bit Systems, x64-based Systems |
≥ 10.0.14393.0; < 10.0.14393.9688 (affected, custom) | CNA: microsoft |
| Windows 10 Version 1809 Microsoft Platforms: 32-bit Systems, x64-based Systems |
≥ 10.0.17763.0; < 10.0.17763.9487 (affected, custom) | CNA: microsoft |
| Windows 10 Version 21H2 Microsoft Platforms: 32-bit Systems, ARM64-based Systems, x64-based Systems |
≥ 10.0.19044.0; < 10.0.19044.7846 (affected, custom) | CNA: microsoft |
| Windows 10 Version 22H2 Microsoft Platforms: 32-bit Systems, ARM64-based Systems, x64-based Systems |
≥ 10.0.19045.0; < 10.0.19045.7846 (affected, custom) | CNA: microsoft |
| Windows 11 version 23H2 Microsoft Platforms: ARM64-based Systems |
≥ 10.0.22631.0; < 10.0.22631.7711 (affected, custom) | CNA: microsoft |
| Windows 11 Version 23H2 Microsoft Platforms: x64-based Systems |
≥ 10.0.22631.0; < 10.0.22631.7711 (affected, custom) | CNA: microsoft |
| Windows 11 Version 24H2 Microsoft Platforms: ARM64-based Systems, x64-based Systems |
≥ 10.0.26100.0; < 10.0.26100.9974 (affected, custom) | CNA: microsoft |
| Windows 11 Version 25H2 Microsoft Platforms: ARM64-based Systems, x64-based Systems |
≥ 10.0.26200.0; < 10.0.26200.9974 (affected, custom) | CNA: microsoft |
| Windows 11 version 26H1 Microsoft Platforms: ARM64-based Systems, x64-based Systems |
≥ 10.0.28000.0; < 10.0.28000.3501 (affected, custom) | CNA: microsoft |
| Windows 11 Version 26H2 Microsoft Platforms: ARM64-based Systems, x64-based Systems |
≥ 10.0.26300.0; < 10.0.26300.9974 (affected, custom) | CNA: microsoft |
| Windows Server 2016 Microsoft Platforms: x64-based Systems |
≥ 10.0.14393.0; < 10.0.14393.9688 (affected, custom) | CNA: microsoft |
| Windows Server 2016 (Server Core installation) Microsoft Platforms: x64-based Systems |
≥ 10.0.14393.0; < 10.0.14393.9688 (affected, custom) | CNA: microsoft |
| Windows Server 2019 Microsoft Platforms: x64-based Systems |
≥ 10.0.17763.0; < 10.0.17763.9487 (affected, custom) | CNA: microsoft |
| Windows Server 2019 (Server Core installation) Microsoft Platforms: x64-based Systems |
≥ 10.0.17763.0; < 10.0.17763.9487 (affected, custom) | CNA: microsoft |
| Windows Server 2022 Microsoft Platforms: x64-based Systems |
≥ 10.0.20348.0; < 10.0.20348.5870 (affected, custom) | CNA: microsoft |
| Windows Server 2025 Microsoft Platforms: x64-based Systems |
≥ 10.0.26100.0; < 10.0.26100.33822 (affected, custom) | CNA: microsoft |
| Windows Server 2025 (Server Core installation) Microsoft Platforms: x64-based Systems |
≥ 10.0.26100.0; < 10.0.26100.33822 (affected, custom) | CNA: microsoft |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 8.0 high |
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C | CNA: microsoft |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-123387CNA: microsoft · vendor-advisory, patch
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