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

Impact

The vulnerability is an out‑of‑bounds read within the Windows Aggregated Data Platform Service that permits an authorized local attacker to read data outside the intended bounds of a memory buffer, potentially exposing sensitive information. The weakness is a classic out‑of‑bounds read error, classified as CWE‑125.

Affected Systems

Affected systems are Microsoft Windows 11 releases, specifically the 24H2, 25H2, 26H2 and 26H1 editions for ARM64 or x64 architectures as listed by the Common Platform Enumeration entries.

Risk and Exploitability

The CVSS score of 5.5 indicates moderate severity. No EPSS score is available and the vulnerability is not listed in the CISA KEV catalog. The exploit requires local privilege; an authenticated user can trigger the out‑of‑bounds read to disclose memory contents. There is no indication of a remote exploitation path or privilege escalation; thus the risk is contained to environments where privileged users have access to the service.

Generated by OpenCVE AI on October 14, 2026 at 05:19 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the latest Microsoft security update that fixes CVE-2026-83870
  • Restrict the Windows Aggregated Data Platform Service so that only trusted accounts with legitimate business need can use it, using group policy or local security settings
  • If a patch is not yet available, follow Microsoft guidance to limit or disable the service until an update is released

Generated by OpenCVE AI on October 14, 2026 at 05:19 UTC.

Tracking

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Advisories

No advisories yet.

History

Wed, 21 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
CPEs 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:*

Sun, 18 Oct 2026 11:15:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
Microsoft windows 11 26h2
Vendors & Products Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
Microsoft windows 11 26h2

Tue, 13 Oct 2026 22:30:00 +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 Aggregated Data Platform Service allows an authorized attacker to disclose information locally.
Title Windows Aggregated Data Platform Service Information Disclosure Vulnerability
First Time appeared Microsoft
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
Microsoft windows 11 Version 26h2 For Arm64-based Systems
Weaknesses CWE-125
CPEs cpe:2.3:a:microsoft:windows_11_version_26h2_for_arm64-based_systems:*:*:*:*:*:*:*:*
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:*:*:*:*:*:*:x64:*
Vendors & Products Microsoft
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
Microsoft windows 11 Version 26h2 For Arm64-based Systems
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 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
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-10-31T18:09:23.058Z

Reserved: 2026-08-31T23:15:41.784Z

Link: CVE-2026-83870

cve-icon Vulnrichment

Updated: 2026-10-13T20:22:22.853Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-13T19:20:36.853

Modified: 2026-10-21T17:11:22.527

Link: CVE-2026-83870

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-18T11:00:06Z

Weaknesses