CVE-2026-48571: CWE-416: Use After Free in Microsoft Windows 11 version 23H2
CVE-2026-48571 is a use-after-free vulnerability in the Windows App Installer component of Microsoft Windows 11 version 23H2 (build 10.0.22631.0). This vulnerability allows an authorized local attacker to elevate privileges. The issue has been assigned a high severity rating with a CVSS score of 7. An official fix is available from Microsoft.
AI Analysis
Technical Summary
CVE-2026-48571 is a use-after-free vulnerability (CWE-416) affecting Windows App Installer in Windows 11 version 23H2 (build 10.0.22631.0). This vulnerability enables a local attacker with limited privileges to elevate their privileges on the affected system. The vulnerability has a CVSS 3.1 base score of 7.0, reflecting high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability as indicated in their security advisory.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate privileges, potentially gaining higher-level access than intended. This could lead to full system compromise depending on the privileges gained. The vulnerability affects confidentiality, integrity, and availability of the system.
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-2026-48571 to remediate this vulnerability.
CVE-2026-48571: CWE-416: Use After Free in Microsoft Windows 11 version 23H2
Description
CVE-2026-48571 is a use-after-free vulnerability in the Windows App Installer component of Microsoft Windows 11 version 23H2 (build 10.0.22631.0). This vulnerability allows an authorized local attacker to elevate privileges. The issue has been assigned a high severity rating with a CVSS score of 7. An official fix is available from Microsoft.
CVSS v3.1
Score 7.0high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-48571 is a use-after-free vulnerability (CWE-416) affecting Windows App Installer in Windows 11 version 23H2 (build 10.0.22631.0). This vulnerability enables a local attacker with limited privileges to elevate their privileges on the affected system. The vulnerability has a CVSS 3.1 base score of 7.0, reflecting high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability as indicated in their security advisory.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate privileges, potentially gaining higher-level access than intended. This could lead to full system compromise depending on the privileges gained. The vulnerability affects confidentiality, integrity, and availability of the system.
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-2026-48571 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-2026-48571","vendor":"Microsoft"}]
Threat ID: 6a566f6868715ace43e6b353
Added to database: 07/14/2026, 17:18:32 UTC
Last enriched: 07/15/2026, 02:02:52 UTC
Last updated: 07/15/2026, 03:41:42 UTC
Views: 5
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