CVE-2026-61348: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability, identified as CWE-416 (Use After Free), exists in the Windows Ancillary Function Driver for WinSock on Windows 10 Version 1607 (build 10.0.14393.0). It allows a local attacker with authorized access to exploit the use-after-free condition to elevate their privileges on the affected system. The CVSS v3.1 base score is 7.0, indicating high severity, with attack vector local, high attack complexity, low privileges required, no user interaction, and impacts on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate their privileges, potentially gaining higher-level access than intended. This can lead to full system compromise depending on the privileges escalated. The vulnerability affects confidentiality, integrity, and availability of the system.
Mitigation Recommendations
An official patch is available from Microsoft to address this vulnerability. Users and administrators of Windows 10 Version 1607 (build 10.0.14393.0) should apply the update provided in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-61348 to remediate this issue.
CVE-2026-61348: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Description
Use after free in Windows Ancillary Function Driver for WinSock 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, identified as CWE-416 (Use After Free), exists in the Windows Ancillary Function Driver for WinSock on Windows 10 Version 1607 (build 10.0.14393.0). It allows a local attacker with authorized access to exploit the use-after-free condition to elevate their privileges on the affected system. The CVSS v3.1 base score is 7.0, indicating high severity, with attack vector local, high attack complexity, low privileges required, no user interaction, and impacts on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate their privileges, potentially gaining higher-level access than intended. This can lead to full system compromise depending on the privileges escalated. The vulnerability affects confidentiality, integrity, and availability of the system.
Mitigation Recommendations
An official patch is available from Microsoft to address this vulnerability. Users and administrators of Windows 10 Version 1607 (build 10.0.14393.0) should apply the update provided in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-61348 to remediate this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-08T17:30:25.175Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-61348","vendor":"Microsoft"}]
Threat ID: 6a7b5800bf8831d5391557f9
Added to database: 08/11/2026, 17:12:32 UTC
Last enriched: 08/11/2026, 22:57:25 UTC
Last updated: 08/12/2026, 00:12:10 UTC
Views: 2
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