Microsoft Windows Device Install Service: Elevation of privilege via incorrect authorization
Summary
Incorrect authorization in the Windows Device Install Service allows a local user with low privileges to elevate their privileges on the affected system. An attacker needs an existing local account or foothold, for example from phishing or a compromised user account. The risk is highest on shared workstations, terminal servers and multi-user systems.
Affected
- Windows 10 Version 21H2: 10.0.19044.0 to before 10.0.19044.7807
- Windows 10 Version 22H2: 10.0.19045.0 to before 10.0.19045.7807
- Windows 11 Version 23H2: 10.0.22631.0 to before 10.0.22631.7652
- Windows 11 Version 24H2: 10.0.26100.0 to before 10.0.26100.9711
- Windows 11 Version 25H2: 10.0.26200.0 to before 10.0.26200.9711
- Windows 11 Version 26H1: 10.0.28000.0 to before 10.0.28000.3231
- Windows 11 Version 26H2: 10.0.26300.0 to before 10.0.26300.9711
- Windows Server 2022: 10.0.20348.0 to before 10.0.20348.5761
- Windows Server 2025 (including Server Core): 10.0.26100.0 to before 10.0.26100.33650
Fixed in
- Install the current Microsoft Windows security update for your version (see the MSRC advisory for the exact KB numbers).
- Windows 10 21H2: build 10.0.19044.7807 or later
- Windows 10 22H2: build 10.0.19045.7807 or later
- Windows 11 23H2: build 10.0.22631.7652 or later
- Windows 11 24H2: build 10.0.26100.9711 or later
- Windows 11 25H2: build 10.0.26200.9711 or later
- Windows 11 26H1: build 10.0.28000.3231 or later
- Windows 11 26H2: build 10.0.26300.9711 or later
- Windows Server 2022: build 10.0.20348.5761 or later
- Windows Server 2025: build 10.0.26100.33650 or later
Workaround
Unknown. No vendor workaround has been identified. A generic third-party suggestion is to review and enforce least-privilege permissions for device installation operations.
Exploitation
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
- No public proof-of-concept specific to this CVE was found; this does not prove that none exists.
- A market price estimate exists, but it is not evidence of active use.
Our recommendation
- Patch affected Windows systems with the October 2026 security update, prioritising shared workstations, terminal servers and Windows Server 2022 and 2025 systems.
- Verify the exact KB numbers and builds in the MSRC advisory before deployment.
- Check whether your Windows 10 21H2 systems still receive security updates under Microsoft's lifecycle policy.
- Restrict local logons on multi-user systems and monitor for unusual privilege changes until patched.
Information from Microsoft (Patch Tuesday October 2026)
- Severity (Microsoft)
- Important
- Impact
- Elevation of privilege – Windows Device Install Service
- Status on Patch Tuesday
- Neither exploited nor publicly disclosed
- Exploitability assessment
- Exploitation less likely
- Product family
- Windows, Windows ESU (Extended Security Updates)
- Updates (KB)
- KB5126655, KB5126657, KB5126646, KB5127648, KB5126653, KB5127646
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Microsoft Security Response Center advisory CVE-2026-83792 msrc.microsoft.com
- OpenCVE CVE-2026-83792 app.opencve.io
- Vulners NVD mirror CVE-2026-83792 vulners.com
- Vulners CVE list mirror CVE-2026-83792 vulners.com
- Tenable plugin 365467 www.tenable.com
- VulDB 419005 vuldb.com
- Strix CVE-2026-83792 www.strix.ai
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 2 Nov 2026, 02:58.
Original description (NVD)
Incorrect authorization in Windows Device Install Service 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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