Rust Wasmi vulnerabilities
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Published CVEs affecting Rust Wasmi: 1 record(s), with affected versions and fixes.
CVE-2025-66627
High · 7.8
CWE-416 Dec 9, 2025
Wasmi's Linear Memory has a Critical Use After Free Vulnerability
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.