---
id: CVE-2026-69805
title: >-
  External control of file name or path in .NET allows an unauthorized attacker
  to elevate privileges over a network.
summary: >-
  External control of file name or path in .NET allows an unauthorized attacker
  to elevate privileges over a network.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-73
  - CWE-200
  - CWE-522
vendor: Microsoft
product: Microsoft Visual Studio 2022 version 17.14
affected:
  - visual_studio_2022_version_17.14 >= 17.14.0 < 17.14.40
  - visual_studio_2026_version_18.9 >= 18.9.0 < 18.9.3
  - Microsoft.Diagnostics.Runtime >= 4.1.740301 < 4.1.740301
published: '2026-09-08'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T10:20:13.370'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-69805'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69805'
    label: secure@microsoft.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-09T04:18:29.981672Z'
ingestedAt: '2026-09-08T19:08:49.620Z'
epss: 0.00575
epssPercentile: 0.45032
---

## Overview

External control of file name or path in .NET allows an unauthorized attacker to elevate privileges over a network.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.