---
id: CVE-2026-71328
title: >-
  Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to
  execute code over a network.
summary: >-
  Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to
  execute code over a network.
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-122
vendor: microsoft
product: visual_studio_2022
affected:
  - 'visual_studio_2022 >= 17.14.0, < 17.14.40'
  - 'visual_studio_2026 >= 18.9.0, < 18.9.3'
  - '.net >= 8.0.0, < 8.0.31'
  - '.net >= 9.0.0, < 9.0.20'
  - '.net >= 10.0.0, < 10.0.12'
  - .net = 11.0.0
patched:
  - visual_studio_2022 17.14.40
  - visual_studio_2026 18.9.3
  - .net 10.0.12
published: '2026-09-08'
updated: '2026-09-11'
sourceUpdated: '2026-09-11T20:27:40.167'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-71328'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-71328'
    label: secure@microsoft.com
  - url: 'https://github.com/dotnet/runtime/security/advisories/GHSA-63gh-g2x5-x69v'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-71328'
  - url: 'https://github.com/advisories/GHSA-63gh-g2x5-x69v'
tags:
  - nvd
  - cve.org
  - ghsa
  - nuget
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-09T04:18:27.816893Z'
epss: 0.00755
epssPercentile: 0.53248
aliases:
  - GHSA-63gh-g2x5-x69v
ecosystem: nuget
ingestedAt: '2026-09-08T19:08:49.623Z'
---

## Overview

Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.

## Affected

- `visual_studio_2022 >= 17.14.0, < 17.14.40`
- `visual_studio_2026 >= 18.9.0, < 18.9.3`
- `.net >= 8.0.0, < 8.0.31`
- `.net >= 9.0.0, < 9.0.20`
- `.net >= 10.0.0, < 10.0.12`
- `.net = 11.0.0`

## Remediation

Upgrade past the affected range:

- `visual_studio_2022 17.14.40`
- `visual_studio_2026 18.9.3`
- `.net 10.0.12`

## Package advisory (CVE-2026-71328)

Affected packages:

- `Microsoft.DiaSymReader.Native >= 17.10.0-beta1.24272.1, <= 18.9.0-beta1.26405.1`

Patched in:

- `Microsoft.DiaSymReader.Native 18.9.0-beta1.26405.2`

Source: https://github.com/advisories/GHSA-63gh-g2x5-x69v