CVE Watch—

CVE-2021-31956

Microsoft Windows NTFS Privilege Escalation Vulnerability

CVSS

—

Sin CVSS

EPSS

22.3%

p98

KEV

SÍ

3 nov 2021

Exploit Today

0-100

Publicado: — · Última mod.: —

EPSS · 30d

22.3%EPSS · 30 días22.3%

2026-09-172026-10-15

Ficha del catálogo KEV

Producto

Microsoft / Windows

Vulnerabilidad

Microsoft Windows NTFS Privilege Escalation Vulnerability

Añadido a KEV

3 nov 2021

Remediar antes de

17 nov 2021

Uso conocido en ransomware

Descripción resumida

Microsoft Windows New Technology File System (NTFS) contains an unspecified vulnerability that allows attackers to escalate privileges via a specially crafted application.

Acción requerida

Apply updates per vendor instructions.

Notas

https://nvd.nist.gov/vuln/detail/CVE-2021-31956

CVEs relacionados

CVECVSSEPSSKEVRExplotTítuloVis.

CVE-2026-969518.8 ALT

74.0%

KEV—72Microsoft Windows Command Injection Vulnerability7h CVE-2026-858807.8 ALT

89.3%

KEV—77Microsoft Windows Heap-Based Buffer Overflow Vulnerability21d CVE-2026-819637.8 ALT

31.9%

KEV—60Microsoft Windows Link Following Vulnerability37d CVE-2026-322024.3 MED

92.0%

KEV—78Microsoft Windows Protection Mechanism Failure Vulnerability63d CVE-2026-208055.5 MED

94.4%

KEV—78Microsoft Windows Information Disclosure Vulnerability77d CVE-2025-622217.8 ALT

84.4%

KEV—75Microsoft Windows Use After Free Vulnerability20d