Description
Out-of-bounds read in Windows Kernel allows an unauthorized attacker to disclose information over a network.
Published: 2026-07-14
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

Out-of-bounds read in Windows Kernel allows an unauthorized attacker to disclose information over a network. Based on the description, it is inferred that an attacker can obtain sensitive information and exfiltrate it over the network. This flaw is classified as CWE-125 and undermines confidentiality without requiring elevated privileges.

Affected Systems

The vulnerability affects Microsoft Windows 10 versions 1809, 21H2, and 22H2; Windows 11 versions 24H2, 25H2, and 26H1; and Windows Server 2019, 2022, and 2025 (both full and Server Core installations). It applies to x86, x64, and ARM64 architectures where available.

Risk and Exploitability

The CVSS score of 7.5 indicates a high severity level, yet the EPSS score of < 1% suggests a low probability of real-world exploitation, and the flaw is not listed in the CISA KEV catalog. Based on the description, it is inferred that the attacker can trigger the flaw by sending crafted requests to the vulnerable kernel component over the network, making the likely attack vector network‑based from an unauthenticated host.

Generated by OpenCVE AI on July 31, 2026 at 08:11 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the Microsoft security update that includes the fix for CVE-2026-50463.
  • Restart the system to ensure the updated kernel code is loaded.
  • Enable Windows Defender Exploit Guard or a comparable endpoint protection solution to monitor and block unauthorized kernel read attempts.
  • Review system event logs for unusual memory read operations after the update.

Generated by OpenCVE AI on July 31, 2026 at 08:11 UTC.

Tracking

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Advisories

No advisories yet.

History

Wed, 15 Jul 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


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

Type Values Removed Values Added
Description Out-of-bounds read in Windows Kernel allows an unauthorized attacker to disclose information over a network.
Title Windows Kernel Information Disclosure Vulnerability
First Time appeared Microsoft
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 2019
Microsoft windows Server 2022
Microsoft windows Server 2025
Weaknesses CWE-125
CPEs 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_2019:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
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 2019
Microsoft windows Server 2022
Microsoft windows Server 2025
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C'}


Subscriptions

Microsoft Windows 10 1809 Windows 10 21h2 Windows 10 22h2 Windows 11 24h2 Windows 11 25h2 Windows 11 26h1 Windows Server 2019 Windows Server 2022 Windows Server 2025
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-07-30T20:24:33.161Z

Reserved: 2026-06-04T18:59:17.977Z

Link: CVE-2026-50463

cve-icon Vulnrichment

Updated: 2026-07-15T13:11:08.345Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-31T08:15:04Z

Weaknesses