Out-of-bounds Read Affecting microsoft.bcl.memory package, versions [,9.0.14)[10.0.0-preview.6.25358.103,10.0.4)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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-MICROSOFTBCLMEMORY-15517134
- published13 Mar 2026
- disclosed10 Mar 2026
- creditUnknown
Introduced: 10 Mar 2026
NewCVE-2026-26127 (opens in a new tab)How to fix?
Upgrade Microsoft.Bcl.Memory to version 9.0.14, 10.0.4 or higher.
Overview
Microsoft.Bcl.Memory is a package that provides Index and Range types to simplify slicing operations on collections for .NET Framework and .NET Standard 2.0.
Affected versions of this package are vulnerable to Out-of-bounds Read when decoding malformed Base64Url input. An attacker can cause a disruption of service.