Windows HID class driver: Information disclosure via use after free

Summary

A use-after-free flaw in the HID class driver of Microsoft Windows allows an authorized local user to disclose information. An attacker needs an existing local, low-privilege account, and no user interaction is required; the flaw cannot be exploited remotely. The CVE record shows impact on confidentiality only (CVSS 5.5, Medium). Microsoft assesses exploitation as unlikely.

Affected

• Windows 10 Version 1607 and Windows Server 2016 (including Server Core), builds before 10.0.14393.9688
• Windows 10 Version 1809 and Windows Server 2019 (including Server Core), 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 2022, builds before 10.0.20348.5870
• Full list to be confirmed in the MSRC advisory (content not retrieved)

Fixed in

Security updates from the November 2026 Patch Tuesday. Fixed builds according to the CNA record:

• Windows 10 1607 / Server 2016: 10.0.14393.9688
• Windows 10 1809 / Server 2019: 10.0.17763.9487
• Windows 10 21H2: 10.0.19044.7846
• Windows 10 22H2: 10.0.19045.7846
• Windows 11 23H2: 10.0.22631.7711
• Windows 11 24H2: 10.0.26100.9974 (research notes list 10.0.26100.33822; verify in MSRC)
• Windows 11 25H2: 10.0.26200.9974
• Windows 11 26H1: 10.0.28000.3501
• Windows 11 26H2: 10.0.26300.9974
• Windows Server 2022: 10.0.20348.5870

Workaround

Unknown. No vendor-documented workaround found; applying the patch is the recommended fix.

Exploitation

• Microsoft's SSVC assessment: exploitation none, not automatable
• CVSS vector contains E:U (unproven exploit maturity)
• Rapid7 lists exploitation as unlikely and publicly disclosed as no
• No public proof of concept found
• No CISA KEV entry found

Our recommendation

• Install the November 2026 security updates on all affected Windows systems, with priority on shared servers, terminal servers and Windows 10 devices enrolled in ESU
• Take the exact KB numbers from the Microsoft Update Catalog or MSRC, not from third-party pages
• Limit local accounts on multi-user systems and monitor for unknown local logons or malware
• Treat this as medium-low priority, after critical and exploited vulnerabilities in the same release

Public exploits iAttack code is publicly available (PoC on GitHub, Metasploit or Exploit-DB).

PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.

Research sources

• CVE.org CNA record CVE-2026-96059 www.cve.org
• Microsoft Security Update Guide (MSRC) msrc.microsoft.com
• Rapid7 Patch Tuesday November 2026 www.rapid7.com
• Strix CVE-2026-96059 (aggregator) www.strix.ai
• Senserva KB5131085 (third-party) senserva.com
• BleepingComputer November 2026 Patch Tuesday www.bleepingcomputer.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, 16:31.