CVE-2026-49798: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
CVE-2026-49798 is a critical use-after-free vulnerability in the Windows Kernel of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). This flaw allows a local unauthorized attacker to elevate privileges, potentially gaining full control over the affected system. An official fix has been released by Microsoft to address this issue.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-49798) involves a use-after-free condition in the Windows Kernel on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation of this flaw enables an attacker with local access to escalate privileges, compromising confidentiality, integrity, and availability of the system. The CVSS v3.1 base score is 9.3, indicating critical severity. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation results in local privilege escalation, granting attackers elevated rights on the affected system. This can lead to full system compromise, including unauthorized access to sensitive data and disruption of system operations.
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-2026-49798 to remediate this vulnerability.
CVE-2026-49798: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Description
CVE-2026-49798 is a critical use-after-free vulnerability in the Windows Kernel of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). This flaw allows a local unauthorized attacker to elevate privileges, potentially gaining full control over the affected system. An official fix has been released by Microsoft to address this issue.
CVSS v3.1
Score 9.3critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-49798) involves a use-after-free condition in the Windows Kernel on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation of this flaw enables an attacker with local access to escalate privileges, compromising confidentiality, integrity, and availability of the system. The CVSS v3.1 base score is 9.3, indicating critical severity. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation results in local privilege escalation, granting attackers elevated rights on the affected system. This can lead to full system compromise, including unauthorized access to sensitive data and disruption of system operations.
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-2026-49798 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-01T17:02:37.208Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49798","vendor":"Microsoft"}]
Threat ID: 6a566f6f68715ace43e6b591
Added to database: 07/14/2026, 17:18:39 UTC
Last enriched: 07/15/2026, 01:34:35 UTC
Last updated: 07/15/2026, 01:34:35 UTC
Views: 2
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