CVE-2026-56184: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor in Microsoft Windows 10 Version 21H2
Exposure of sensitive information to an unauthorized actor in Windows Win32K allows an authorized attacker to disclose information locally.
AI Analysis
Technical Summary
This vulnerability, tracked as CVE-2026-56184, involves an exposure of sensitive information (CWE-200) in the Windows Win32K subsystem of Windows 10 Version 21H2 (build 10.0.19044.0). An attacker with local authorized privileges can exploit this flaw to disclose sensitive information. The CVSS v3.1 base score is 5.5, reflecting medium severity with local attack vector, low attack complexity, and no user interaction required. Microsoft has released an official fix to address this vulnerability.
Potential Impact
The vulnerability allows an authorized local attacker to disclose sensitive information, potentially leading to information leakage. There is no impact on system integrity or availability. 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-2026-56184 to remediate this vulnerability.
CVE-2026-56184: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor in Microsoft Windows 10 Version 21H2
Description
Exposure of sensitive information to an unauthorized actor in Windows Win32K allows an authorized attacker to disclose information locally.
CVSS v3.1
Score 5.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, tracked as CVE-2026-56184, involves an exposure of sensitive information (CWE-200) in the Windows Win32K subsystem of Windows 10 Version 21H2 (build 10.0.19044.0). An attacker with local authorized privileges can exploit this flaw to disclose sensitive information. The CVSS v3.1 base score is 5.5, reflecting medium severity with local attack vector, low attack complexity, and no user interaction required. Microsoft has released an official fix to address this vulnerability.
Potential Impact
The vulnerability allows an authorized local attacker to disclose sensitive information, potentially leading to information leakage. There is no impact on system integrity or availability. 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-2026-56184 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-19T13:54:04.006Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56184","vendor":"Microsoft"}]
Threat ID: 6a5676ba68715ace43f0ae99
Added to database: 07/14/2026, 17:49:46 UTC
Last enriched: 08/13/2026, 15:48:02 UTC
Last updated: 08/25/2026, 22:52:12 UTC
Views: 61
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