Windows USB Scanner Driver: Heap-based buffer overflow allows local privilege escalation
Summary
A heap-based buffer overflow (CWE-122) in the Windows USB Scanner Driver allows an authorized local attacker to elevate privileges. The attacker needs a local logon with low privileges and the attack complexity is high, so the flaw cannot be exploited remotely. The CVSS 3.1 base score is 7.0 (High).
Affected
- Windows 10 Version 1607: builds before 10.0.14393.9688
- Windows 10 Version 1809: builds before 10.0.17763.9487
- Windows 10 Version 21H2: builds before 10.0.19044.7846
- Windows 10 Version 22H2: builds before 10.0.19045.7846
- Windows 11 Version 23H2: builds before 10.0.22631.7711
- Windows 11 Version 24H2: builds before 10.0.26100.9974
- Windows 11 Version 25H2: builds before 10.0.26200.9974
- Windows 11 Version 26H1: builds before 10.0.28000.3501
- Windows 11 Version 26H2: builds before 10.0.26300.9974
- Windows Server 2016 (including Server Core): builds before 10.0.14393.9688
- Windows Server 2019 (including Server Core): builds before 10.0.17763.9487
- Windows Server 2022: builds before 10.0.20348.5870
Fixed in
- Install the Microsoft security update for the affected Windows version that contains a build at or above the fixed build listed in the affected section.
- Cumulative update (KB) numbers: Unknown.
Workaround
Unknown.
Exploitation
- No evidence of exploitation found.
- CISA SSVC assessment: exploitation none, not automatable, total technical impact.
- Exploit code maturity is rated Unproven.
Our recommendation
- Patch affected Windows 10, Windows 11 and Windows Server systems in the next regular update cycle, prioritizing shared PCs, terminal servers and workstations with multiple local users.
- Confirm the KB numbers and fixed builds on the MSRC advisory before deployment.
- Limit local interactive logons on shared machines until patched.
- Monitor for unusual privilege changes on endpoints.
Information from Microsoft (Patch Tuesday November 2026)
- Severity (Microsoft)
- Important
- Impact
- Elevation of privilege – Windows USB Scanner Driver
- 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, 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-2026-119876 msrc.microsoft.com
- CVE Record: CVE-2026-119876 www.cve.org
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, 08:33.
Original description (NVD)
Heap-based buffer overflow in Windows USB Scanner Driver 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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