---
id: CVE-2026-70190
title: >-
  Improper link resolution before file access ('link following') in .NET allows
  an authorized attacker to elevate privileges locally.
summary: >-
  Improper link resolution before file access ('link following') in .NET allows
  an authorized attacker to elevate privileges locally.
severity: high
cvss: 7.3
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-59
published: '2026-10-13'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T04:18:33.147'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-70190'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70190'
    label: secure@microsoft.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-70190.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-70190'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2551134'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-70190'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-70190'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ingestedAt: '2026-10-13T19:43:29.023Z'
vendor: Microsoft
product: .NET 10.0
affected:
  - .net_10.0 >= 10.0.0 < 10.0.113
  - .net_11.0 >= 11.0.0 < 11.0.100-rc.2
  - '.net_9.0 >= 9.0.0 < 9.0.319, 9.0.122'
  - visual_studio_2022_version_17.14 >= 17.14.0 < 17.14.42
  - visual_studio_2026_version_18.10 >= 18.10.0 < 18.10.4
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-08T00:00:00+00:00'
epss: 0.0049
epssPercentile: 0.41952
---

## Overview

Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevate privileges locally.

## Remediation

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

## Vendor advisories

- **Red Hat VEX** · Important · updated 2026-10-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-70190.json)