Description
Out-of-bounds read in Windows Device Association Service allows an authorized attacker to disclose information locally.
Published: 2026-10-13
Score: 5.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Local Information Disclosure
Action: Patch
AI Analysis

Impact

The Windows Device Association Service contains an out‑of‑bounds read flaw (CWE‑125). When processed with the proper context, a local user with enough privileges can cause the service to read memory beyond its bounds, allowing disclosure of sensitive data stored on the system. The weakness results in exposure of confidential information, but does not provide code execution or denial of service.

Affected Systems

Microsoft Windows 11, versions 23H2, 24H2, 25H2, 26H2 and 26H1, and Microsoft Windows Server 2025 including Server Core installations are affected. The vulnerability applies to both ARM64 and x64 builds for Windows 11 and applies to the Windows Server 2025 release.

Risk and Exploitability

The CVSS score of 5.5 reflects a moderate severity reflecting the local information disclosure impact. No EPSS score is available, and the vulnerability is not listed in the CISA KEV catalog. Based on the description, the likely attack vector is local; an attacker must first have authorized local access to the affected system to trigger the out‑of‑bounds read. Because the weakness is limited to local privilege escalation, the overall risk is moderate but remains significant for systems that host sensitive data or operate in restricted environments.

Generated by OpenCVE AI on October 14, 2026 at 02:11 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Install the Microsoft security update for CVE-2026-70227 from the Microsoft Security Response Center.
  • Verify that the Device Association Service runs with the minimum required privileges; disable the service on machines where it is not needed.
  • Keep the operating system and all installed cumulative updates current and monitor Microsoft advisories for any related changes.

Generated by OpenCVE AI on October 14, 2026 at 02:11 UTC.

Tracking

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Advisories

No advisories yet.

History

Wed, 28 Oct 2026 17:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_26h2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_26h2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:x64:*

Sun, 18 Oct 2026 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft windows 11 23h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
Microsoft windows 11 26h2
Microsoft windows Server 2025 (server Core Installation)
Vendors & Products Microsoft windows 11 23h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
Microsoft windows 11 26h2
Microsoft windows Server 2025 (server Core Installation)

Wed, 14 Oct 2026 00:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 13 Oct 2026 19:15:00 +0000

Type Values Removed Values Added
Description Out-of-bounds read in Windows Device Association Service allows an authorized attacker to disclose information locally.
Title Windows Device Association Service Information Disclosure Vulnerability
First Time appeared Microsoft
Microsoft windows 11 23h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
Microsoft windows 11 Version 26h2 For Arm64-based Systems
Microsoft windows Server 2025
Weaknesses CWE-125
CPEs cpe:2.3:a:microsoft:windows_11_version_26h2_for_arm64-based_systems:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft windows 11 23h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
Microsoft windows 11 Version 26h2 For Arm64-based Systems
Microsoft windows Server 2025
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C'}


Subscriptions

Microsoft Windows 11 23h2 Windows 11 23h2 Windows 11 24h2 Windows 11 24h2 Windows 11 25h2 Windows 11 25h2 Windows 11 26h1 Windows 11 26h1 Windows 11 26h2 Windows 11 Version 26h2 For Arm64-based Systems Windows Server 2025 Windows Server 2025 (server Core Installation)
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-10-31T18:10:18.883Z

Reserved: 2026-08-03T23:54:57.810Z

Link: CVE-2026-70227

cve-icon Vulnrichment

Updated: 2026-10-13T20:50:56.619Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-13T19:19:38.920

Modified: 2026-10-28T16:43:14.620

Link: CVE-2026-70227

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-18T08:45:16Z

Weaknesses