FKIE_CVE-2026-21241

Vulnerability from fkie_nvd - Published: 2026-02-10 18:16 - Updated: 2026-02-11 20:57
Severity ?
7.0 (High) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
References
secure@microsoft.comhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21241Vendor Advisory
Impacted products
Vendor Product Version
microsoft windows_11_23h2 *
microsoft windows_11_23h2 *
microsoft windows_11_24h2 *
microsoft windows_11_24h2 *
microsoft windows_11_25h2 *
microsoft windows_11_25h2 *
microsoft windows_server_2022 *
microsoft windows_server_2022_23h2 *
microsoft windows_server_2025 *
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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Detection rules are retrieved from Rulezet.