CVE-2026-49166: CWE-416: Use After Free in Microsoft Windows 11 Version 24H2
CVE-2026-49166 is a use-after-free vulnerability in Microsoft Printer Drivers on Windows 11 Version 24H2. It allows an authorized local attacker to elevate privileges. The vulnerability has a high severity score of 7.8. An official fix is available from Microsoft.
AI Analysis
Technical Summary
This vulnerability, identified as CVE-2026-49166 and classified under CWE-416 (Use After Free), affects Microsoft Printer Drivers in Windows 11 Version 24H2 (build 10.0.26100.0). It enables an authorized local attacker to elevate privileges by exploiting a use-after-free condition. The CVSS v3.1 base score is 7.8, indicating high severity with impact on confidentiality, integrity, and availability. Microsoft has published an official fix to address this issue.
Potential Impact
An authorized local attacker can exploit this vulnerability to elevate privileges on the affected system, potentially gaining higher-level access than intended. The impact includes high confidentiality, integrity, and availability consequences as per the CVSS vector.
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-2026-49166 to remediate this vulnerability.
CVE-2026-49166: CWE-416: Use After Free in Microsoft Windows 11 Version 24H2
Description
CVE-2026-49166 is a use-after-free vulnerability in Microsoft Printer Drivers on Windows 11 Version 24H2. It allows an authorized local attacker to elevate privileges. The vulnerability has a high severity score of 7.8. An official fix is available from Microsoft.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CVE-2026-49166 and classified under CWE-416 (Use After Free), affects Microsoft Printer Drivers in Windows 11 Version 24H2 (build 10.0.26100.0). It enables an authorized local attacker to elevate privileges by exploiting a use-after-free condition. The CVSS v3.1 base score is 7.8, indicating high severity with impact on confidentiality, integrity, and availability. Microsoft has published an official fix to address this issue.
Potential Impact
An authorized local attacker can exploit this vulnerability to elevate privileges on the affected system, potentially gaining higher-level access than intended. The impact includes high confidentiality, integrity, and availability consequences as per the CVSS vector.
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-2026-49166 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-27T23:44:09.622Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49166","vendor":"Microsoft"}]
Threat ID: 6a566f6a68715ace43e6b3b1
Added to database: 07/14/2026, 17:18:34 UTC
Last enriched: 07/15/2026, 01:49:43 UTC
Last updated: 07/15/2026, 01:49:43 UTC
Views: 2
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