CVE-2026-62773: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Use after free in Windows Kerberos allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-62773) involves a use-after-free condition in the Windows Kerberos implementation on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local access with authorized privileges and can result in privilege escalation. The CVSS 3.1 vector indicates the attack requires local access with high attack complexity and low privileges, but no user interaction. The impact includes high confidentiality, integrity, and availability impacts. Microsoft has published an official fix to address this vulnerability.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate their privileges on the affected Windows 10 Version 1607 system. This could lead to full system compromise, including unauthorized access to sensitive information, modification of system data, and disruption of system availability.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. It is recommended to apply the security update provided by Microsoft as soon as possible to remediate this issue. No additional mitigations are specified by the vendor advisory.
CVE-2026-62773: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Description
Use after free in Windows Kerberos allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.0high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-62773) involves a use-after-free condition in the Windows Kerberos implementation on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local access with authorized privileges and can result in privilege escalation. The CVSS 3.1 vector indicates the attack requires local access with high attack complexity and low privileges, but no user interaction. The impact includes high confidentiality, integrity, and availability impacts. Microsoft has published an official fix to address this vulnerability.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate their privileges on the affected Windows 10 Version 1607 system. This could lead to full system compromise, including unauthorized access to sensitive information, modification of system data, and disruption of system availability.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. It is recommended to apply the security update provided by Microsoft as soon as possible to remediate this issue. No additional mitigations are specified by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-14T21:04:04.256Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62773","vendor":"Microsoft"}]
Threat ID: 6a7b5815bf8831d539155ed3
Added to database: 08/11/2026, 17:12:53 UTC
Last enriched: 08/11/2026, 21:43:42 UTC
Last updated: 08/12/2026, 00:12:10 UTC
Views: 3
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