CVE-2026-50509: CWE-502: Deserialization of Untrusted Data in Microsoft Windows 10 Version 1607
Deserialization of untrusted data in Windows Wireless Wide Area Network Service allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-50509) is classified as CWE-502: Deserialization of Untrusted Data. It affects Windows 10 Version 1607 (build 10.0.14393.0) specifically in the Windows Wireless Wide Area Network Service. The flaw allows an attacker with local authorized access to elevate their privileges by exploiting improper handling of untrusted serialized data. The CVSS 3.1 base score is 7.8, indicating high severity with impacts to confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability.
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 complete compromise of confidentiality, integrity, and availability of the affected system components.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 1607 to remediate this vulnerability. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50509 for detailed patching instructions.
CVE-2026-50509: CWE-502: Deserialization of Untrusted Data in Microsoft Windows 10 Version 1607
Description
Deserialization of untrusted data in Windows Wireless Wide Area Network Service allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-50509) is classified as CWE-502: Deserialization of Untrusted Data. It affects Windows 10 Version 1607 (build 10.0.14393.0) specifically in the Windows Wireless Wide Area Network Service. The flaw allows an attacker with local authorized access to elevate their privileges by exploiting improper handling of untrusted serialized data. The CVSS 3.1 base score is 7.8, indicating high severity with impacts to confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability.
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 complete compromise of confidentiality, integrity, and availability of the affected system components.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 1607 to remediate this vulnerability. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50509 for detailed patching instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-04T19:00:41.292Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50509","vendor":"Microsoft"}]
Threat ID: 6a5676a768715ace43f09686
Added to database: 07/14/2026, 17:49:27 UTC
Last enriched: 08/13/2026, 15:07:03 UTC
Last updated: 08/28/2026, 22:52:11 UTC
Views: 69
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