Vulnerability Description
WebAssembly Micro Runtime (WAMR) is a lightweight standalone WebAssembly (Wasm) runtime. Prior to version 2.4.4, an out-of-bounds array access issue exists in WAMR's fast interpreter mode during WASM bytecode loading. When frame_ref_bottom and frame_offset_bottom arrays are at capacity and a GET_GLOBAL(I32) opcode is encountered, frame_ref_bottom is expanded but frame_offset_bottom may not be. If this is immediately followed by an if opcode that triggers preserve_local_for_block, the function traverses arrays using stack_cell_num as the upper bound, causing out-of-bounds access to frame_offset_bottom since it wasn't expanded to match the increased stack_cell_num. This issue has been patched in version 2.4.4.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Bytecodealliance | Webassembly Micro Runtime | < 2.4.4 |
Related Weaknesses (CWE)
References
- https://github.com/bytecodealliance/wasm-micro-runtime/releases/tag/WAMR-2.4.4Release Notes
- https://github.com/bytecodealliance/wasm-micro-runtime/security/advisories/GHSA-ExploitVendor Advisory
FAQ
What is CVE-2025-64713?
CVE-2025-64713 is a vulnerability with a CVSS score of 5.1 (MEDIUM). WebAssembly Micro Runtime (WAMR) is a lightweight standalone WebAssembly (Wasm) runtime. Prior to version 2.4.4, an out-of-bounds array access issue exists in WAMR's fast interpreter mode during WASM ...
How severe is CVE-2025-64713?
CVE-2025-64713 has been rated MEDIUM with a CVSS base score of 5.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-64713?
Check the references section above for vendor advisories and patch information. Affected products include: Bytecodealliance Webassembly Micro Runtime.