PT-2026-7342 · Microsoft · Windows Ancillary Function Driver For Winsock+1

Angelboy · Publicado 2026-02-10 · Atualizado 2026-02-11 · CVE-2026-21238

Positive Technologies (AI Summary)

CVSS v3.1

7.8

Alta

Vetor base

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Windows Ancillary Function Driver for WinSock (affected versions not specified)

Description An issue with access control in the Windows Ancillary Function Driver for WinSock can allow a local attacker to gain higher privileges on a system. This is an elevation-of-privilege issue that could affect the system.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Access Control

Enumeração de Fraquezas

CWE-284

Identificadores relacionados

BDU:2026-01749

CVE-2026-21238

Produtos afetados

Windows

Windows Ancillary Function Driver For Winsock

Referências · 7

• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-21238 · Nota de Segurança
• https://osv.dev/vulnerability/CVE-2026-21238 · Aviso do Fabricante
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21238 · Aviso do Fabricante
• https://nvd.nist.gov/vuln/detail/CVE-2026-21238 · Nota de Segurança
• https://t.me/avleonovcom/1631 · Publicação no Telegram
• https://bdu.fstec.ru/vul/2026-01749 · Nota de Segurança
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-21238 · Aviso do Fabricante