---
title: "Microsoft.DiaSymReader.Native — CVE-2026-69439"
description: "A privilege escalation flaw affects the NuGet package Microsoft.DiaSymReader.Native. Affected versions: >= 17.10.0-beta1.24272.1, <= 18.9.0-beta1.26405.1. Fixed from version 18.9.0-beta1.26405.2. CVSS score 8.8."
canonical: https://inyourgeek.com/en/failles-de-securite/2026-09-09-cve-2026-69439
type: faille-de-securite
author: "Sébastien Soulier"
publisher: "InYourGeek"
language: en
datePublished: 2026-09-09
dateModified: 2026-09-09
---
# Microsoft.DiaSymReader.Native — CVE-2026-69439

A privilege escalation flaw affects the NuGet package Microsoft.DiaSymReader.Native. Affected versions: >= 17.10.0-beta1.24272.1, <= 18.9.0-beta1.26405.1. Fixed from version 18.9.0-beta1.26405.2. CVSS score 8.8.

## What to do

Update Microsoft.DiaSymReader.Native to 18.9.0-beta1.26405.2 or later.

| Fact | Value |
| --- | --- |
| Package | Microsoft.DiaSymReader.Native |
| Ecosystem | NuGet (.NET) |
| Class | Privilege escalation |
| Affected versions | >= 17.10.0-beta1.24272.1, <= 18.9.0-beta1.26405.1 |
| Fixed version | 18.9.0-beta1.26405.2 |
| CVSS | 8.8 |
| CVE | CVE-2026-69439 |
| GHSA | GHSA-527h-q9f6-p7qx |
| Published on | September 9, 2026 |
| Severity | High |

## Sources

- [GitHub Security Advisory — GHSA-527h-q9f6-p7qx](https://github.com/advisories/GHSA-527h-q9f6-p7qx) — GitHub Security Advisories
- [NVD — CVE-2026-69439](https://nvd.nist.gov/vuln/detail/CVE-2026-69439) — NVD

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