Microsoft Windows Setup and Deployment: Elevation of privilege
Summary
Windows Setup and Deployment components in multiple Windows 10, Windows 11 and Windows Server versions improperly restrict communication channels to intended endpoints (CWE-923). An authorized local user with low privileges can elevate privileges on the affected system. Exploitation requires high attack complexity and user interaction, and the flaw is not remotely reachable.
Affected
- Windows 10 Version 1607 (below 10.0.14393.9688)
- Windows 10 Version 1809 (below 10.0.17763.9487)
- Windows 10 Version 21H2 (below 10.0.19044.7846)
- Windows 10 Version 22H2 (below 10.0.19045.7846)
- Windows 11 version 23H2 (below 10.0.22631.7711)
- Windows 11 Version 24H2 (below 10.0.26100.9974)
- Windows 11 Version 25H2 (below 10.0.26200.9974)
- Windows 11 version 26H1 (below 10.0.28000.3501)
- Windows 11 Version 26H2 (below 10.0.26300.9974)
- Windows Server 2016, including Server Core (below 10.0.14393.9688)
- Windows Server 2019, including Server Core (below 10.0.17763.9487)
- Windows Server 2022 (below 10.0.20348.5870)
Fixed in
- Install the Windows security updates of 10 November 2026 for each affected build.
- Verify the exact fixed build against the MSRC Security Update Guide, because third-party sources conflict on some builds.
Workaround
Unknown.
Exploitation
- Not known to be exploited in the wild in the sources reviewed.
- Rapid7 rates exploitation as less likely and reports no public disclosure.
- No public proof of concept was found.
- CISA SSVC: exploitation none, automatable no, technical impact total.
Our recommendation
- Include this vulnerability in the November 2026 patch cycle and prioritise multi-user systems and terminal servers.
- Check that Windows Update is current, especially on older builds such as 1607 and 1809, which may need specific servicing paths.
- Confirm which of your systems run affected builds and verify the fixed build against MSRC first.
- Review local accounts and restrict unnecessary local logons on shared or kiosk systems.
Information from Microsoft (Patch Tuesday November 2026)
- Severity (Microsoft)
- Important
- Impact
- Elevation of privilege – Windows Setup and Deployment
- Status on Patch Tuesday
- Neither exploited nor publicly disclosed
- Exploitability assessment
- Exploitation less likely
- Product family
- Windows, Windows ESU (Extended Security Updates)
- Updates (KB)
- KB5131291, KB5131083, KB5131085, KB5131096, KB5131090, KB5131087
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Microsoft Security Update Guide (CVE-2026-119914) msrc.microsoft.com
- CVE.org Record CVE-2026-119914 www.cve.org
- Senserva KB5131085 (third-party patch tracker) senserva.com
- Senserva KB5132059 (third-party patch tracker) senserva.com
- Strix CVE-2026-119914 (third-party version list) www.strix.ai
- Rapid7 Patch Tuesday November 2026 www.rapid7.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 11 Nov 2026, 11:32.
Original description (NVD)
Improper restriction of communication channel to intended endpoints in Windows Setup and Deployment allows an authorized attacker to elevate privileges locally.
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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