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Windows Connected User Experiences and Telemetry: Information disclosure vulnerability

CVE-2026-96101Medium 5.5

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Summary

A local information disclosure vulnerability in the Windows Connected User Experiences and Telemetry service allows an authorized local user to access files or directories that are accessible to external parties. The attacker needs a low-privilege account on the affected machine, and the impact is limited to confidentiality. The issue is not internet-facing and is mainly relevant as one step in an attack chain after another compromise.

Affected

  • Windows 11 version 23H2: 10.0.22631.0 to before 10.0.22631.7711
  • Windows 11 version 24H2: 10.0.26100.0 to before 10.0.26100.9974
  • Windows 11 version 25H2: 10.0.26200.0 to before 10.0.26200.9974
  • Windows 11 version 26H1: 10.0.28000.0 to before 10.0.28000.3501
  • Windows 11 version 26H2: 10.0.26300.0 to before 10.0.26300.9974
  • Windows Server 2025 (including Server Core): 10.0.26100.0 to before 10.0.26100.33822
  • Windows 10 and older builds: not listed; status unknown.

Fixed in

  • Windows 11 version 23H2: 10.0.22631.7711 or later
  • Windows 11 version 24H2: 10.0.26100.9974 or later
  • Windows 11 version 25H2: 10.0.26200.9974 or later
  • Windows 11 version 26H1: 10.0.28000.3501 or later
  • Windows 11 version 26H2: 10.0.26300.9974 or later
  • Windows Server 2025 (including Server Core): 10.0.26100.33822 or later

Fix released with the November 2026 Patch Tuesday updates. KB numbers: unknown; take them from the MSRC entry.

Workaround

Unknown. No documented workaround has been found. Disabling the service is a general privacy measure and is untested as a mitigation for this CVE.

Exploitation

  • No evidence of exploitation in the wild.
  • Microsoft's exploitation assessment: Exploitation Less Likely.
  • Not publicly disclosed; no public proof of concept known.
  • CISA SSVC: exploitation none, not automatable, partial technical impact.

Our recommendation

  • Install the November 2026 cumulative updates on all affected Windows 11 and Windows Server 2025 systems, using the MSRC entry to confirm the KB for each build.
  • Prioritize shared, multi-user machines and terminal servers, where other local users are more likely.
  • Limit local accounts to what is needed and review access to sensitive files.
  • Verify the affected version ranges on MSRC, as they come from the CNA record and a third-party mirror.

Information from Microsoft (Patch Tuesday November 2026)

Severity (Microsoft)
Important
Impact
Information disclosure – Windows Connected User Experiences and Telemetry
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 11 Nov 2026, 16:28.

Original description (NVD)

Files or directories accessible to external parties in Windows Connected User Experiences and Telemetry allows an authorized attacker to disclose information locally.

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.

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