Use After Free Affecting microsoft.native.quic.msquic.openssl package, versions [,2.4.19)[2.5.3,2.5.10)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DOTNET-MICROSOFTNATIVEQUICMSQUICOPENSSL-21717177
- published26 Oct 2026
- disclosed8 Sept 2026
- creditUnknown
Introduced: 8 Sep 2026
CVE-2026-62815 (opens in a new tab)How to fix?
Upgrade Microsoft.Native.Quic.MsQuic.OpenSSL to version 2.4.19, 2.5.10 or higher.
Overview
Affected versions of this package are vulnerable to Use After Free via the handling of network path creation and removal, which can lead to pointer invalidation. An attacker can achieve arbitrary code execution by sending specially crafted packets over the network to an affected service. No authentication or user interaction is required.