---
title: "Microsoft.Native.Quic.MsQuic.OpenSSL — CVE-2026-62815"
description: "A remote code execution flaw affects the NuGet package Microsoft.Native.Quic.MsQuic.OpenSSL. Affected versions: >= 2.5.3, < 2.5.10. Fixed from version 2.5.10. CVSS score 9.8."
canonical: https://inyourgeek.com/en/failles-de-securite/2026-09-08-cve-2026-62815
type: faille-de-securite
author: "Sébastien Soulier"
publisher: "InYourGeek"
language: en
datePublished: 2026-09-08
dateModified: 2026-09-08
---
# Microsoft.Native.Quic.MsQuic.OpenSSL — CVE-2026-62815

A remote code execution flaw affects the NuGet package Microsoft.Native.Quic.MsQuic.OpenSSL. Affected versions: >= 2.5.3, < 2.5.10. Fixed from version 2.5.10. CVSS score 9.8.

## What to do

Update Microsoft.Native.Quic.MsQuic.OpenSSL to 2.5.10 or later.

| Fact | Value |
| --- | --- |
| Package | Microsoft.Native.Quic.MsQuic.OpenSSL |
| Ecosystem | NuGet (.NET) |
| Class | Remote code execution |
| Affected versions | >= 2.5.3, < 2.5.10 |
| Fixed version | 2.5.10 |
| CVSS | 9.8 |
| CVE | CVE-2026-62815 |
| GHSA | GHSA-92f5-vc22-8j33 |
| Published on | September 8, 2026 |
| Severity | Critical |

## Sources

- [GitHub Security Advisory — GHSA-92f5-vc22-8j33](https://github.com/advisories/GHSA-92f5-vc22-8j33) — GitHub Security Advisories
- [NVD — CVE-2026-62815](https://nvd.nist.gov/vuln/detail/CVE-2026-62815) — NVD

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