# WinFsp vulnerabilities

Source: https://junglewise.ai/threats/technologies/winfsp  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/winfsp.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 3 vulnerabilities in WinFsp: 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-93689, was published on 18 September 2026. Nothing in the last four weeks, down from 1 vulnerability in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 1
- All time: 3 (0 critical, 0 exploited in the wild)

## About WinFsp

WinFsp is an open-source Windows File System Proxy that allows for the creation of user-mode file systems on Windows.

## Latest WinFsp vulnerabilities

- [CVE-2026-93689: WinFsp null pointer dereference in kernel device control handler](https://junglewise.ai/threats/cve-2026-93689-winfsp-through-2-2-26215-contains-a-null-pointer-dereference) (medium, CVSS 5.5, published 18 Sep 2026)
- [CVE-2026-7162: WinFsp integer overflow privilege escalation](https://junglewise.ai/threats/cve-2026-7162-winfsp-integer-overflow-privilege-escalation) (high, CVSS 7.8, published 13 Jul 2026)
- [CVE-2026-3006: WinFSP local privilege escalation via kernel heap overflow](https://junglewise.ai/threats/cve-2026-3006-winfsp-local-privilege-escalation-via-kernel-heap-overflow) (high, CVSS 7, published 27 Apr 2026)

## Most severe WinFsp vulnerabilities

- [CVE-2026-7162: WinFsp integer overflow privilege escalation](https://junglewise.ai/threats/cve-2026-7162-winfsp-integer-overflow-privilege-escalation) (high, CVSS 7.8, published 13 Jul 2026)
- [CVE-2026-3006: WinFSP local privilege escalation via kernel heap overflow](https://junglewise.ai/threats/cve-2026-3006-winfsp-local-privilege-escalation-via-kernel-heap-overflow) (high, CVSS 7, published 27 Apr 2026)
- [CVE-2026-93689: WinFsp null pointer dereference in kernel device control handler](https://junglewise.ai/threats/cve-2026-93689-winfsp-through-2-2-26215-contains-a-null-pointer-dereference) (medium, CVSS 5.5, published 18 Sep 2026)

## Vulnerabilities per week

Nothing in the last four weeks, down from 1 vulnerability in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 1 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "WinFsp vulnerabilities", https://junglewise.ai/threats/technologies/winfsp, 9 November 2026.