critical

CVE-2026-62815

NuGet · Microsoft.Native.Quic.MsQuic.OpenSSL

Summary

Microsoft QUIC: Remote Code Execution Vulnerability

Severity
critical
CVSS
9.8
EPSS
1.2% (p67)
CWE
CWE-416
Also known as
GHSA-92f5-vc22-8j33#Microsoft.Native.Quic.MsQuic.OpenSSL
Published
2026-09-08
Updated
2026-09-08

Advisory details

Summary

Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.

Details

New network path creations and removals triggered by incoming packets can lead to a pointer invalidation.

Patches

Impact

An unauthenticated attacker could exploit this vulnerability by sending a specially crafted packet to an affected service over the network. Successful exploitation could allow the attacker to execute code on the target system. No authentication or user interaction is required.

References

Related advisories

Is your project exposed to this? Stateward checks every dependency on every pull request and flags it only if your code actually reaches it.

Check my repo

Summarize with AI

ChatGPTClaudePerplexity

Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.