CVE-2025-64713 Memory corruption in wasm-micro-runtime

Medium 5.1 Published 25 Nov 2025 Updated 26 Nov 2025

An out-of-bounds array access in WAMR's fast interpreter allows attackers to cause memory corruption, potentially leading to code execution or crashes.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-64713?

CVE-2025-64713 is a medium-severity memory corruption vulnerability in bytecodealliance wasm-micro-runtime, published on 25 Nov 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-119

Which versions are affected by CVE-2025-64713?

It affects 1 product.

Products include Bytecodealliance Webassembly Micro Runtime.

How do I fix CVE-2025-64713?

No fix has been published for CVE-2025-64713 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2025-64713 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-64713 exists.

Sources

Also known as GHSA-gvx3-gg3x-rjcx.