GHSA-92f5-vc22-8j33
Microsoft QUIC: Remote Code Execution Vulnerability
Quick fix
GHSA-92f5-vc22-8j33 — Microsoft.Native.Quic.MsQuic.OpenSSL: upgrade to the fixed version with the command below.
dotnet add package Microsoft.Native.Quic.MsQuic.OpenSSL --version 2.5.10Details
# 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
- Guard path promotion [e0f55b5](https://github.com/microsoft/msquic/commit/e0f55b5fdc9fff0b4465976d066ebd22fb7e2b3b)
# 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.
Are you affected?
Enter the version of the package you're using.
Affected packages
2.5.3Fixed in: 2.5.10dotnet add package Microsoft.Native.Quic.MsQuic.OpenSSL --version 2.5.102.5.3Fixed in: 2.5.10dotnet add package Microsoft.Native.Quic.MsQuic.Schannel --version 2.5.100Fixed in: 2.4.19dotnet add package Microsoft.Native.Quic.MsQuic.OpenSSL --version 2.4.190Fixed in: 2.4.19dotnet add package Microsoft.Native.Quic.MsQuic.Schannel --version 2.4.19References
- https://github.com/microsoft/msquic/security/advisories/GHSA-92f5-vc22-8j33[WEB]
- https://nvd.nist.gov/vuln/detail/CVE-2026-62815[ADVISORY]
- https://github.com/microsoft/msquic/pull/6217[WEB]
- https://github.com/microsoft/msquic/pull/6219[WEB]
- https://github.com/microsoft/msquic/pull/6220[WEB]
- https://github.com/microsoft/msquic/commit/583e7d5b509bb0bfa3518482d98879b6eda41ad0[WEB]
- https://github.com/microsoft/msquic/commit/9ff06b71fd4b4d5258361598ada5b24cbc1beb20[WEB]
- https://github.com/microsoft/msquic/commit/e0f55b5fdc9fff0b4465976d066ebd22fb7e2b3b[WEB]
- https://github.com/microsoft/msquic[PACKAGE]
- https://github.com/microsoft/msquic/releases/tag/v2.4.19[WEB]
- https://github.com/microsoft/msquic/releases/tag/v2.5.10[WEB]
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62815[WEB]