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Windows Storage Spaces Controller: Remote code execution vulnerability

CVE-2026-113814High 8.8

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Summary

An untrusted pointer dereference in the Windows Storage Spaces Controller allows remote code execution. According to the CVE record, an unauthorized attacker can execute code over a network. The CVSS vector requires user interaction (UI:R). Microsoft rates the impact as high for confidentiality, integrity and availability.

Affected

  • 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 (version range per CNA record, not yet confirmed on MSRC)
  • Windows 11 version 26H1 before 10.0.28000.3501 (per aggregator, not yet confirmed on MSRC)
  • Windows 11 version 26H2 before 10.0.26300.9974 (per aggregator, not yet confirmed on MSRC)
  • Windows Server 2025 (including Server Core) before 10.0.26100.33822

Fixed in

  • Windows 11 23H2: 10.0.22631.7711 or later
  • Windows 11 24H2: 10.0.26100.9974 or later
  • Windows Server 2025: 10.0.26100.33822 or later
  • Other builds: verify against the MSRC update guide. Unknown from primary source for Windows 10 and Windows Server 2016/2019/2022.

Workaround

Unknown.

Exploitation

  • No evidence of exploitation in the wild found
  • Not listed in CISA KEV according to a third-party tracker
  • CISA SSVC: exploitation none, automatable no, technical impact total
  • No public proof of concept found
  • EPSS not available
  • NVD status at time of research: Awaiting Analysis

Our recommendation

  • Install the November 2026 cumulative updates on all affected Windows 11 and Windows Server 2025 systems, and confirm the update number via Windows Update or the Microsoft Update Catalog
  • Prioritize file servers and hosts using Storage Spaces, and any internet-facing systems
  • Limit network access to storage services and restrict which hosts can reach them until patched
  • Monitor for unusual network activity and check the MSRC page and NVD for updates

Information from Microsoft (Patch Tuesday November 2026)

Severity (Microsoft)
Important
Impact
Remote code execution – Windows Storage Spaces Controller
Status on Patch Tuesday
Neither exploited nor publicly disclosed
Exploitability assessment
Exploitation less likely
Product family
Windows
Updates (KB)
KB5131087, KB5132061, KB5132043, KB5131080, KB5131077, KB5132059

Entry in the Microsoft Security Update Guide

Public exploits

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

Research sources

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 10 Nov 2026, 22:46.

Original description (NVD)

Untrusted pointer dereference in Windows Storage Spaces Controller allows an unauthorized attacker to execute code over a network.

NVD references (1)

Sources

The tracker combines official, freely usable data sources – updated continuously:

This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.

Affected? We can help.

We check whether your systems are affected, install updates and close the gap – continuously with the System Health Checker if you wish.