Description
Buffer over-read in Windows Kernel allows an authorized attacker to disclose information locally.
Published: 2026-07-14
Score: 5.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The flaw is a buffer over-read in the Windows Kernel that permits a local attacker who has authorized access to read memory beyond intended bounds. The over-read can reveal sensitive contents from kernel buffers, which may include system secrets or state that could aid future attacks. The weakness is classified as a classic unbounded read, mapped to CWE-126.

Affected Systems

Microsoft Windows 10 versions 1607, 1809, 21H2, 22H2; Windows 11 versions 24H2, 25H2, 26H1; and Windows Server editions 2012, 2012 R2, 2016, 2019, 2022, 2025—including Server Core installations.

Risk and Exploitability

The CVSS base score is 5.5, which places the vulnerability in a moderate severity range. EPSS is reported as less than 1%, indicating a very low probability of exploitation in the wild. It is not present in CISA’s KEV catalog. Based on the description, it is inferred that the vulnerability does not provide remote code execution or privilege escalation. The attack requires local, authorized interaction and does not provide remote compromise. However, exposure of kernel memory could serve as a stepping stone for privileged attackers to conduct further exploitation.

Generated by OpenCVE AI on July 31, 2026 at 07:42 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the Microsoft security update for CVE-2026-50475 via Windows Update or the Microsoft Update Catalog.
  • Make sure all affected Windows 10, Windows 11, and Windows Server installations—including Server Core builds—are updated to the latest cumulative or feature roll‑ups that contain the fix.
  • Limit local user privileges so that only trusted and minimal‑privilege accounts can run code with the authorization level necessary to trigger the over‑read.
  • If an update cannot be applied immediately, monitor Microsoft advisories and apply the patch as soon as it becomes available.

Generated by OpenCVE AI on July 31, 2026 at 07:42 UTC.

Tracking

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Advisories

No advisories yet.

History

Thu, 16 Jul 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Tue, 14 Jul 2026 17:45:00 +0000

Type Values Removed Values Added
Description Buffer over-read in Windows Kernel allows an authorized attacker to disclose information locally.
Title Windows Kernel Information Disclosure Vulnerability
First Time appeared Microsoft
Microsoft windows 10 1607
Microsoft windows 10 1809
Microsoft windows 10 21h2
Microsoft windows 10 22h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
Microsoft windows Server 2012
Microsoft windows Server 2012 R2
Microsoft windows Server 2016
Microsoft windows Server 2019
Microsoft windows Server 2022
Microsoft windows Server 2025
Weaknesses CWE-126
CPEs cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_21H2:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*: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:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2012_R2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft windows 10 1607
Microsoft windows 10 1809
Microsoft windows 10 21h2
Microsoft windows 10 22h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
Microsoft windows Server 2012
Microsoft windows Server 2012 R2
Microsoft windows Server 2016
Microsoft windows Server 2019
Microsoft windows Server 2022
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 10 1607 Windows 10 1809 Windows 10 21h2 Windows 10 22h2 Windows 11 24h2 Windows 11 25h2 Windows 11 26h1 Windows Server 2012 Windows Server 2012 R2 Windows Server 2016 Windows Server 2019 Windows Server 2022 Windows Server 2025
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-08-03T22:55:59.394Z

Reserved: 2026-06-04T18:59:17.979Z

Link: CVE-2026-50475

cve-icon Vulnrichment

Updated: 2026-07-15T13:32:25.926Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-31T07:45:12Z

Weaknesses