CVE-2026-20935: CWE-822: Untrusted Pointer Dereference in Microsoft Windows 11 version 23H2
Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave allows an unauthorized attacker to disclose information locally.
AI Analysis
Technical Summary
This vulnerability involves an untrusted pointer dereference in the Windows VBS Enclave component of Windows 11 version 23H2 (build 10.0.22631.0). The flaw enables a local attacker without privileges or user interaction to disclose information. The CVSS 3.1 vector indicates low attack complexity and no privileges required, with high confidentiality impact but no integrity or availability impact. Microsoft has published an official fix for this vulnerability.
Potential Impact
An unauthorized local attacker can exploit this vulnerability to disclose sensitive information from the Windows VBS Enclave. There is no impact on system integrity or availability. The confidentiality impact is high, potentially exposing sensitive data to the attacker.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20935 to remediate the issue.
CVE-2026-20935: CWE-822: Untrusted Pointer Dereference in Microsoft Windows 11 version 23H2
Description
Untrusted pointer dereference in Windows Virtualization-Based Security (VBS) Enclave allows an unauthorized attacker to disclose information locally.
CVSS v3.1
Score 6.2medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an untrusted pointer dereference in the Windows VBS Enclave component of Windows 11 version 23H2 (build 10.0.22631.0). The flaw enables a local attacker without privileges or user interaction to disclose information. The CVSS 3.1 vector indicates low attack complexity and no privileges required, with high confidentiality impact but no integrity or availability impact. Microsoft has published an official fix for this vulnerability.
Potential Impact
An unauthorized local attacker can exploit this vulnerability to disclose sensitive information from the Windows VBS Enclave. There is no impact on system integrity or availability. The confidentiality impact is high, potentially exposing sensitive data to the attacker.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20935 to remediate the issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-04T20:04:16.337Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20935","vendor":"Microsoft"}]
Threat ID: 69668ae4a60475309f9ae1f6
Added to database: 01/13/2026, 18:11:48 UTC
Last enriched: 07/30/2026, 23:39:11 UTC
Last updated: 09/10/2026, 19:36:52 UTC
Views: 187
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