Microsoft Windows HID Parser Library: Integer underflow allows privilege escalation
Summary
The HID Parser Library in Microsoft Windows contains an integer underflow (CWE-191). According to the CVSS vector in the CVE data, an authorized attacker with low privileges can elevate privileges over the network with high impact on confidentiality, integrity and availability. The network vector is not yet confirmed by Microsoft or NVD, and the official advisory content could not be verified.
Affected
- Windows 10 Version 1607 and Windows Server 2016: 10.0.14393.0 to before 10.0.14393.9688
- Windows 10 Version 1809 and Windows Server 2019: 10.0.17763.0 to before 10.0.17763.9487
- Windows 10 Version 21H2: 10.0.19044.0 to before 10.0.19044.7846
- Windows 10 Version 22H2: 10.0.19045.0 to before 10.0.19045.7846
- Windows 11 Version 23H2: 10.0.22631.0 to before 10.0.22631.7711
- Windows 11 Version 24H2: 10.0.26100.0 to before 10.0.26100.9974
- Windows 11 Version 25H2 and 26H2: 10.0.26200.0 to before 10.0.26200.9974 and 10.0.26300.0 to before 10.0.26300.9974
- Windows 11 Version 26H1: 10.0.28000.0 to before 10.0.28000.3501
- Windows Server 2022: 10.0.20348.0 to before 10.0.20348.5870
Fixed in
- Fixed builds as listed in the affected ranges above (the update is the one that brings the build to or above these versions). Install the Microsoft security update for your Windows version.
Workaround
Unknown.
Exploitation
- No public exploitation evidence found at the time of writing.
- No CISA KEV entry found.
- EPSS: Unknown.
Our recommendation
- Inventory Windows 10, Windows 11 and Windows Server systems and compare their build numbers with the affected ranges.
- Install the Microsoft security update as soon as it is available for your version.
- Restrict local and remote logon rights on servers and administrator workstations.
- Check the MSRC advisory and NVD for confirmed vector and fixes, and re-check within 24 to 48 hours.
Information from Microsoft (Patch Tuesday November 2026)
- Severity (Microsoft)
- Important
- Impact
- Elevation of privilege – HID Parser Library
- Status on Patch Tuesday
- Neither exploited nor publicly disclosed
- Exploitability assessment
- Exploitation unlikely
- Product family
- Windows, Windows ESU (Extended Security Updates)
- Updates (KB)
- KB5131291, KB5131085, KB5131096, KB5131090, KB5131087, KB5132061
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- MSRC Security Update Guide: CVE-2026-96010 msrc.microsoft.com
- Sibling CVE-2026-83569 on Vulners (MSCVE) vulners.com
- Sibling CVE-2026-83877 on Vulners (MSCVE) vulners.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 10 Nov 2026, 20:53.
Original description (NVD)
Integer underflow (wrap or wraparound) in HID Parser Library allows an authorized attacker to elevate privileges over a network.
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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