CVE Watch—

CVE-2025-21418

Microsoft Windows Ancillary Function Driver for WinSock Heap-Based Buffer Overflow Vulnerability

CVSS

—

Sem CVSS

EPSS

2.1%

p82

KEV

SIM

11 de fev. de 2025

Exploit Today

0-100

Publicado: — · Última mod.: —

EPSS · 30d

1.6%EPSS · 30 dias2.1%

2026-10-082026-11-05

Ficha do catálogo KEV

Produto

Microsoft / Windows

Vulnerabilidade

Microsoft Windows Ancillary Function Driver for WinSock Heap-Based Buffer Overflow Vulnerability

Adicionado ao KEV

11 de fev. de 2025

Corrigir até

4 de mar. de 2025

Uso conhecido em ransomware

Não

Descrição resumida

Microsoft Windows Ancillary Function Driver for WinSock contains a heap-based buffer overflow vulnerability that allows for privilege escalation, enabling a local attacker to gain SYSTEM privileges.

Ação necessária

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Notas

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21418 ; https://nvd.nist.gov/vuln/detail/CVE-2025-21418

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