CVE-2026-105016
Critical
Description
Heap-based buffer overflow in Microsoft QUIC allows an unauthorized attacker to execute code over a network.
SeverityCritical
CVSS9.8
Exploit probability—
ProductMicrosoft.native.quic.msquic.schannel
PublishedOct 13, 2026
First seenOct 13, 2026
Weakness typeCWE-122CWE-122
How to fix
Update
- Microsoft.Native.Quic.MsQuic.Schannel2.5.11-ci.159417053 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Microsoft.Native.Quic.MsQuic.SchannelNuGet | 2.5.11-ci.156755675 ≤ v < 2.5.11-ci.159417053 | 2.5.11-ci.159417053 |
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