Integer Underflow (Wrap or Wraparound) Affecting microsoft.native.quic.msquic.schannel package, versions [,2.4.18)[2.5.5,2.5.7)
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Test your applications- Snyk IDSNYK-DOTNET-MICROSOFTNATIVEQUICMSQUICSCHANNEL-16111772
- published20 Apr 2026
- disclosed16 Apr 2026
- creditUnknown
Introduced: 16 Apr 2026
NewCVE-2026-32179 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade Microsoft.Native.Quic.MsQuic.Schannel to version 2.4.18, 2.5.7 or higher.
Overview
Affected versions of this package are vulnerable to Integer Underflow (Wrap or Wraparound) in the ACK frame decoding. An attacker can gain elevated privileges by sending specially crafted network packets that trigger an integer underflow during frame parsing.