---
title: "CVE-2026-85328: Windows Projected File System - Authentication Bypass"
description: "Windows Projected File System contains a broken authentication caused by weak authentication mechanisms, letting authorized attackers elevate privileges locally, exploit requires local authorized access."
url: https://panop.io/threat-heartbeat/CVE-2026-85328/
---

# CVE-2026-85328 Windows Projected File System - Authentication Bypass

Windows Projected File System contains a broken authentication caused by weak authentication mechanisms, letting authorized attackers elevate privileges locally, exploit requires local authorized access.

CVSS base score 7.0 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.22% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-85328)

## Details

Type

Authentication Bypass

Impact

Privilege Escalation

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Published

13 October 2026

Updated

15 October 2026

Weakness

[CWE-1390](https://cwe.mitre.org/data/definitions/1390.html)

## Vendor fix

Update to the latest version with security patches.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-85328](https://nvd.nist.gov/vuln/detail/CVE-2026-85328)
- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85328](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85328)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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