CVE-2026-20857
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk38th percentile - higher than 38% of all known CVEs
Summary
An untrusted pointer dereference in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
Risk Assessment
An attacker could compromise cloud file system integrity, leading to privilege escalation and data access.
Recommendation
Install the latest Windows security updates from Microsoft.
Other vulnerabilities in Windows Cloud Files Mini Filter Driver
See all- CVE-2026-88107High
Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
- CVE-2026-88106High
Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
- CVE-2026-35418High
Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
- CVE-2026-34337High
Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
- CVE-2026-33835High
Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
- CVE-2020-17103High
A vulnerability in the Windows Cloud Files Mini Filter Driver allows for elevation of privilege. An attacker can exploit this flaw to gain higher privileges on the system.
- CVE-2025-62221HighActively exploited
Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
- CVE-2024-30085High
A vulnerability in the Windows Cloud Files Mini Filter Driver allows elevation of privilege. The flaw stems from improper input validation, potentially enabling an attacker to execute code in kernel context.
- CVE-2023-36036HighActively exploited
An elevation of privilege vulnerability in the Windows Cloud Files Mini Filter Driver. It may allow an attacker to gain higher privileges on the system.
- CVE-2026-83991Medium
Missing authentication for critical function in Windows Cloud Files Mini Filter Driver allows an authorized attacker to perform tampering locally.
Original NVD description (English source)
Untrusted pointer dereference in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS