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Security Advisories

CVE-2025-66627

NVD

https://nvd.nist.gov/vuln/detail/CVE-2025-66627

Severity

8.4

High

CVSS V3

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Summary

Wasmi's Linear Memory has a Critical Use After Free Vulnerability

Description

Wasmi is a WebAssembly interpreter focused on constrained and embedded systems. In versions 0.41.0, 0.41.1, 0.42.0 through 0.47.1, 0.50.0 through 0.51.2 and 1.0.0, Wasmi's linear memory implementation leads to a Use After Free vulnerability, triggered by a WebAssembly module under certain memory growth conditions. This issue potentially leads to memory corruption, information disclosure, or code execution. This issue is fixed in versions 0.41.2, 0.47.1, 0.51.3 and 1.0.1. To workaround this issue, consider limiting the maximum linear memory sizes where feasible.

References

  • https://nvd.nist.gov/vuln/detail/CVE-2025-66627

Affected packages


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