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CVE-2026-41088 is an elevation-of-privilege vulnerability in the Windows Ancillary Function Driver for WinSock. According to the provided advisory content, the flaw is caused by external control of a file name or path (CWE-73). A locally authenticated attacker with low privileges can exploit the issue locally, without user interaction, to elevate privileges. The available vendor description does not identify the specific vulnerable function or code path, but Microsoft classifies the issue as affecting the Windows Ancillary Function Driver for WinSock and indicates that successful exploitation may result in SYSTEM-level privileges.
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No public exploit code observed for this vulnerability.
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Cross-references every affected SKU, including bundled OEM variants.
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