CVE-2026-73005: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Description
Use after free in Windows Authentication Methods allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.0high
Affected software
Microsoft
Windows 10 Version 1607
Microsoft
Windows 10 Version 1809
Microsoft
Windows 10 Version 21H2
Microsoft
Windows 10 Version 22H2
Microsoft
Windows 11 version 23H2
Microsoft
Windows 11 Version 23H2
Microsoft
Windows 11 Version 24H2
Microsoft
Windows 11 Version 25H2
Microsoft
Windows 11 version 26H1
Microsoft
Windows Server 2016
Microsoft
Windows Server 2016 (Server Core installation)
Microsoft
Windows Server 2019
Microsoft
Windows Server 2019 (Server Core installation)
Microsoft
Windows Server 2022
Microsoft
Windows Server 2025
Microsoft
Windows Server 2025 (Server Core installation)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a use-after-free condition in Windows Authentication Methods on Windows 10 Version 1607 and several subsequent updates. An authorized local attacker can exploit this flaw to elevate privileges on the affected system. The issue is tracked as CWE-416 (Use After Free) and CWE-362. Microsoft has published an official fix addressing this vulnerability.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate their privileges, potentially gaining higher-level access to the system. The vulnerability affects confidentiality, integrity, and availability, as indicated by the CVSS vector (C:H/I:H/A:H). There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security updates provided in the Microsoft advisory to remediate this vulnerability. No additional mitigation steps are indicated beyond applying the official patch.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-10T18:43:43.199Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-73005","vendor":"Microsoft"}]
Threat ID: 6aa04550acd9273b49fa9e16
Added to database: 09/08/2026, 17:26:40 UTC
Last enriched: 10/14/2026, 21:53:28 UTC
Last updated: 10/23/2026, 15:10:14 UTC
Views: 27
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