Microsoft Windows: Local privilege escalation in Modern Device Management
Summary
A use-after-free vulnerability in the Windows Modern Device Management (MDM) component allows an authorized local user to elevate privileges. The attacker needs a low-privileged local account and a complex attack condition, so the flaw is not reachable from the internet. If exploited, the impact on confidentiality, integrity and availability is rated high. Microsoft's CVE record lists no known exploitation.
Affected
- Windows 10 Version 1809: 10.0.17763.0 before 10.0.17763.9487
- Windows 10 Version 21H2: 10.0.19044.0 before 10.0.19044.7846
- Windows 10 Version 22H2: 10.0.19045.0 before 10.0.19045.7846
- Windows 11 Version 23H2: 10.0.22631.0 before 10.0.22631.7711
- Windows 11 Version 24H2: 10.0.26100.0 before 10.0.26100.9974
- Windows 11 Version 25H2: 10.0.26200.0 before 10.0.26200.9974
- Windows 11 Version 26H1: 10.0.28000.0 before 10.0.28000.3501
- Windows 11 Version 26H2: 10.0.26300.0 before 10.0.26300.9974
- Windows Server 2019 (including Server Core): 10.0.17763.0 before 10.0.17763.9487
- Windows Server 2022: 10.0.20348.0 before 10.0.20348.5870
- Windows Server 2025 (including Server Core): 10.0.26100.0 before 10.0.26100.33822
Fixed in
- Cumulative updates that install the first non-affected builds listed above.
- KB numbers: Unknown until verified against the MSRC advisory.
Workaround
Unknown. No vendor-documented workaround was found.
Exploitation
- No known exploitation in the wild.
- No public proof-of-concept found.
- CISA SSVC: Exploitation none, not automatable, technical impact total.
Our recommendation
- Install the Windows cumulative update for each affected version as listed in the MSRC advisory.
- Until patched, limit local logons to trusted users and minimise local administrator accounts.
- Review MDM enrolments on shared devices.
- Patch the other MDM elevation flaws from 2026 as well, including the network-reachable CVE-2026-69460.
Information from Microsoft (Patch Tuesday November 2026)
- Severity (Microsoft)
- Important
- Impact
- Elevation of privilege – Windows Modern Device Management (MDM)
- Status on Patch Tuesday
- Neither exploited nor publicly disclosed
- Exploitability assessment
- Exploitation less likely
- Product family
- Windows, Windows ESU (Extended Security Updates)
- Updates (KB)
- KB5131085, KB5131096, KB5131090, KB5131087, KB5132061, KB5132043
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- CVE.org record CVE-2026-113820 www.cve.org
- Microsoft Security Response Center advisory CVE-2026-113820 msrc.microsoft.com
- Strix.ai CVE-2026-113820 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 11 Nov 2026, 09:01.
Original description (NVD)
Use after free in Windows Modern Device Management (MDM) 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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