CVE-2026-20851: CWE-125: Out-of-bounds Read in Microsoft Windows 11 Version 24H2
Out-of-bounds read in Capability Access Management Service (camsvc) allows an unauthorized attacker to disclose information locally.
AI Analysis
Technical Summary
This vulnerability involves an out-of-bounds read in the Capability Access Management Service (camsvc) component of Microsoft Windows 11 Version 24H2 (build 10.0.26100.0). An unauthorized attacker with local access can exploit this flaw to read memory beyond intended boundaries, potentially disclosing sensitive information. The vulnerability does not require user interaction or privileges and has been assigned CVE-2026-20851. Microsoft has released an official fix to remediate this issue.
Potential Impact
Successful exploitation allows an unauthorized local attacker to disclose sensitive information due to an out-of-bounds read in the camsvc service. There is no impact on integrity or availability, only confidentiality is affected.
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-2026-20851 to remediate this vulnerability.
CVE-2026-20851: CWE-125: Out-of-bounds Read in Microsoft Windows 11 Version 24H2
Description
Out-of-bounds read in Capability Access Management Service (camsvc) allows an unauthorized attacker to disclose information locally.
CVSS v3.1
Score 6.2medium
Affected software
Microsoft
Windows 11 Version 24H2
Microsoft
Windows 11 Version 25H2
Microsoft
Windows Server 2025
Microsoft
Windows Server 2025 (Server Core installation)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an out-of-bounds read in the Capability Access Management Service (camsvc) component of Microsoft Windows 11 Version 24H2 (build 10.0.26100.0). An unauthorized attacker with local access can exploit this flaw to read memory beyond intended boundaries, potentially disclosing sensitive information. The vulnerability does not require user interaction or privileges and has been assigned CVE-2026-20851. Microsoft has released an official fix to remediate this issue.
Potential Impact
Successful exploitation allows an unauthorized local attacker to disclose sensitive information due to an out-of-bounds read in the camsvc service. There is no impact on integrity or availability, only confidentiality is affected.
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-2026-20851 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-03T05:54:20.377Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20851","vendor":"Microsoft"}]
Threat ID: 69668ae0a60475309f9ae0f4
Added to database: 01/13/2026, 18:11:44 UTC
Last enriched: 07/30/2026, 23:45:20 UTC
Last updated: 09/10/2026, 22:26:00 UTC
Views: 253
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