CVE-2026-48566: CWE-125: Out-of-bounds Read in Microsoft Windows 11 Version 24H2
Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to disclose information locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-48566) involves an out-of-bounds read in the Windows Desktop Window Manager (DWM) Core Library in Windows 11 Version 24H2, build 10.0.26100.0. The flaw permits an authorized attacker with local access and low privileges to read memory beyond intended bounds, potentially disclosing sensitive information. The vulnerability does not allow code execution or denial of service. Microsoft has published an official fix to address this issue.
Potential Impact
An authorized local attacker can exploit this vulnerability to read memory outside of the intended buffer boundaries, leading to potential disclosure of sensitive information. There is no impact on integrity or availability. The attack requires low privileges and no user interaction. No known exploits are reported in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-48566 to remediate this vulnerability.
CVE-2026-48566: CWE-125: Out-of-bounds Read in Microsoft Windows 11 Version 24H2
Description
Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to disclose information locally.
CVSS v3.1
Score 5.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-48566) involves an out-of-bounds read in the Windows Desktop Window Manager (DWM) Core Library in Windows 11 Version 24H2, build 10.0.26100.0. The flaw permits an authorized attacker with local access and low privileges to read memory beyond intended bounds, potentially disclosing sensitive information. The vulnerability does not allow code execution or denial of service. Microsoft has published an official fix to address this issue.
Potential Impact
An authorized local attacker can exploit this vulnerability to read memory outside of the intended buffer boundaries, leading to potential disclosure of sensitive information. There is no impact on integrity or availability. The attack requires low privileges and no user interaction. No known exploits are reported in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-48566 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-21T20:00:35.245Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-48566","vendor":"Microsoft"}]
Threat ID: 6a284d0f8dd33fbd856658a4
Added to database: 6/9/2026, 5:27:43 PM
Last enriched: 6/9/2026, 5:42:00 PM
Last updated: 6/10/2026, 5:04:47 AM
Views: 6
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