Windows Storage: Elevation of privilege via untrusted pointer dereference

Summary

A flaw in the Windows Storage component, which handles disks and volumes, allows an attacker to dereference an untrusted pointer and gain higher privileges. Exploitation requires physical access to the device and a valid low-privilege account, so the vulnerability is local, not remote. The CVSS 3.1 base score is 6.6 (medium), with high impact on confidentiality, integrity and availability. No exploitation has been reported.

Affected

• Windows 10 Version 1607 (10.0.14393.0 before 10.0.14393.9688)
• 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 2016, including Server Core (10.0.14393.0 before 10.0.14393.9688)
• 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)

Fixed in

• Install the November 2026 security updates for all affected Windows versions.
• Fixed builds according to the official CVE record: 10.0.14393.9688 (1607, Server 2016), 10.0.17763.9487 (1809, Server 2019), 10.0.19044.7846 (21H2), 10.0.19045.7846 (22H2), 10.0.22631.7711 (23H2), 10.0.26100.9974 (24H2), 10.0.26200.9974 (25H2), 10.0.28000.3501 (26H1), 10.0.26300.9974 (26H2), 10.0.20348.5870 (Server 2022).
• KB numbers: Unknown. Third-party pages are not confirmed by Microsoft.

Workaround

Unknown.

• No vendor workaround is documented in the available sources.

Exploitation

• No exploitation in the wild found in the available sources.
• CISA SSVC assessment: exploitation none, not automatable, total technical impact.
• No public proof of concept found.

Our recommendation

• Install the November 2026 security updates on all affected systems, starting with physically accessible devices.
• Upgrade or retire unsupported builds such as Windows 10 1607 and 1809.
• Restrict physical access to workstations and servers, and lock rooms with servers.
• Protect devices with a BIOS/UEFI password, disable boot from removable media and enable BitLocker with TPM and PIN.
• Confirm KB numbers and build numbers on the MSRC Security Update Guide.

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

• Microsoft Security Update Guide: CVE-2026-95889 msrc.microsoft.com
• CVE Record: CVE-2026-95889 www.cve.org
• Strix: CVE-2026-95889 (unverified version data) www.strix.ai
• Senserva KB 5131096 (third-party summary) senserva.com
• CWE-822: Untrusted Pointer Dereference vulnerability.circl.lu

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, 11:42.