Windows Storage Port Driver: Privilege escalation via untrusted pointer dereference
Summary
The Windows Storage Port Driver, a kernel-level component for storage devices, contains an untrusted pointer dereference (CWE-822). An unauthorized attacker with physical access to an affected device can use it to elevate privileges, with high impact on confidentiality, integrity and availability. Exploitation requires physical access, so the flaw is not reachable remotely over the network.
Affected
- Windows 10 Version 1607 (10.0.14393.0 to < 10.0.14393.9612)
- Windows 10 Version 1809 (10.0.17763.0 to < 10.0.17763.9376)
- Windows 10 Version 21H2 (10.0.19044.0 to < 10.0.19044.7807)
- Windows 10 Version 22H2 (10.0.19045.0 to < 10.0.19045.7807)
- Windows 11 Version 23H2 (10.0.22631.0 to < 10.0.22631.7652)
- Windows 11 Version 24H2 (10.0.26100.0 to < 10.0.26100.9711)
- Windows 11 Version 25H2 (10.0.26200.0 to < 10.0.26200.9711)
- Windows 11 Version 26H1 (10.0.28000.0 to < 10.0.28000.3231)
- Windows 11 Version 26H2 (10.0.26300.0 to < 10.0.26300.9711)
- Windows Server 2012 incl. Server Core (6.2.9200.0 to < 6.2.9200.26434)
- Windows Server 2012 R2 incl. Server Core (6.3.9600.0 to < 6.3.9600.23470)
- Windows Server 2016 (10.0.14393.0 to < 10.0.14393.9612)
Fixed in
- Fixed builds per the CNA record: the first build listed as not affected in each range above, for example 10.0.14393.9612 for Windows 10 1607 and Server 2016.
- Verify the exact update and KB number for each OS build on the Microsoft Security Update Guide before deployment.
Workaround
- Unknown. No vendor workaround was found in the sources.
- Restrict physical access to affected devices and servers.
- Full-disk encryption (BitLocker) and locked, supervised workstations are general defensive measures, not taken from the vendor advisory.
Exploitation
- CISA SSVC: exploitation none, not automatable, total technical impact.
- In the wild: no evidence found.
- Public proof of concept: none found for this CVE.
- EPSS 0.00417 (low).
Our recommendation
- Inventory all Windows 10 1607, Windows Server 2012, 2012 R2 and 2016 systems and check their vendor support status.
- Install the October 2026 security update for each affected build once the exact KB is confirmed on the Microsoft Security Update Guide.
- Prioritise physical security for laptops, servers and shared workstations, and enable full-disk encryption.
- Monitor for vendor updates to this advisory and for any change in exploitation status.
Information from Microsoft (Patch Tuesday October 2026)
- Severity (Microsoft)
- Important
- Impact
- Elevation of privilege – Windows Storage Port Driver
- Status on Patch Tuesday
- Neither exploited nor publicly disclosed
- Exploitability assessment
- Exploitation unlikely
- Product family
- Windows, Windows ESU (Extended Security Updates)
- Updates (KB)
- KB5126835, KB5126836, KB5126868, KB5126651, KB5126657, KB5126655
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Microsoft Security Update Guide: CVE-2026-102188 msrc.microsoft.com
- NVD record via Vulners: CVE-2026-102188 vulners.com
- CVE list record via Vulners: CVE-2026-102188 vulners.com
- Positive Technologies record via Vulners: PT-2026-111900 vulners.com
- Microsoft partner PDF: 2026 CVEs cdn-dynmedia-1.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 4 Nov 2026, 22:13.
Original description (NVD)
Untrusted pointer dereference in Windows Storage Port Driver 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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