Out-of-bounds Read Affecting bytecodealliance/wasm-micro-runtime package, versions [,2.4.4)
Threat Intelligence
Exploit Maturity
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
Proof of Concept
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Test your applications- Snyk IDSNYK-UNMANAGED-BYTECODEALLIANCEWASMMICRORUNTIME-14123044
- published26 Nov 2025
- disclosed25 Nov 2025
- creditZhenwei Jin
Introduced: 25 Nov 2025
NewCVE-2025-64713 (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 bytecodealliance/wasm-micro-runtime to version 2.4.4 or higher.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Read in the preserve_local_for_block function, when handling a sequence where a GET_GLOBAL(I32) opcode is followed by an if opcode in fast interpreter mode. An attacker can cause out-of-bounds access to the frame_offset_bottom array by crafting specific WebAssembly bytecode that manipulates stack cell numbers and triggers improper array expansion.