Race Condition Vulnerability in WinFsp Product by WinFsp
CVE-2026-3006

7HIGH

Key Information:

Vendor

Winfsp

Status
Winfsp
Vendor
CVE Published:
27 April 2026

What is CVE-2026-3006?

The vulnerability presents a race condition that can be exploited to trigger a heap overflow in the kernel. This flaw opens the door for attackers to achieve local privilege escalation, which could allow unauthorized access and control over system-level functions within WinFsp software.

Affected Version(s)

WinFSP 2.1.25156 and lower

References

https://www.csa.gov.sg/alerts-and-advisories/alerts/al-20...
https://github.com/winfsp/winfsp/releases/tag/v2.2B1

CVSS V3.1

Score:
7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Tay Kiat Loong
.