Microsoft Windows HID Parser Library: Integer overflow allows privilege escalation
Summary
An integer overflow or wraparound (CWE-190) in the HID Parser Library of supported Windows 10, Windows 11 and Windows Server versions allows an attacker to elevate privileges. The attack requires physical access to the device. No privileges or user interaction are required, and the CVSS score is 6.8 (medium). The NVD analysis was still pending at the time of research.
Affected
- Windows 10 Version 1607 and Windows Server 2016 (including Server Core): before 10.0.14393.9688
- Windows 10 Version 1809 and Windows Server 2019 (including Server Core): before 10.0.17763.9487
- Windows 10 Version 21H2: before 10.0.19044.7846
- Windows 10 Version 22H2: before 10.0.19045.7846
- Windows 11 Version 23H2: before 10.0.22631.7711
- Windows 11 Version 24H2: before 10.0.26100.9974
- Windows 11 Version 25H2: before 10.0.26200.9974
- Windows 11 Version 26H1: before 10.0.28000.3501
- Windows 11 Version 26H2: before 10.0.26300.9974
- Windows Server 2022: before 10.0.20348.5870
Fixed in
- Install the Microsoft security update of November 2026 (Patch Tuesday, 10 November 2026) or later for your Windows version.
- Fixed builds: see the affected builds above (the first build number at or above each limit).
Workaround
Unknown. No vendor workaround has been published. Until patched, restrict physical access to devices and control USB ports.
Exploitation
- No evidence of exploitation in the wild.
- CISA SSVC: exploitation none, not automatable, total technical impact.
- No public proof of concept found.
Our recommendation
- Patch affected Windows systems in the next regular cycle, prioritising shared office and reception devices.
- Verify the fixed builds in the MSRC Security Update Guide before rollout.
- Check whether any systems run Windows 10 1607, 1809 or 21H2 and whether they still receive updates.
- Apply the October 2026 HID Parser update (CVE-2026-83569) in the same rollout.
- Secure unattended devices, lock sessions and restrict USB ports.
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
- Microsoft Security Update Guide: CVE-2026-96982 msrc.microsoft.com
- CVE Record CVE-2026-96982 www.cve.org
- OffSeq Radar: CVE-2026-96982 radar.offseq.com
- BleepingComputer: Microsoft November 2026 Patch Tuesday www.bleepingcomputer.com
- Strix: CVE-2026-96982 www.strix.ai
- MSRC Security Update Guide: CVE-2026-83569 (related HID Parser issue) msrc.microsoft.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, 10:18.
Original description (NVD)
Integer overflow or wraparound in HID Parser Library allows an unauthorized attacker to elevate privileges with a physical attack.
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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