Vulnerability · Published Nov 25, 2025 · Assigned by GitHub_M
CVE-2025-64704WebAssembly Micro Runtime vulnerable to a segmentation fault in v128.store instruction
Medium 4.7
In plain English
A medium-severity security flaw in wasm-micro-runtime from bytecodealliance. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities).
Severity (CVSS 3.1)4.7Medium
Exploit odds (30 days)0.2%top 89.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
WebAssembly Micro Runtime (WAMR) is a lightweight standalone WebAssembly (Wasm) runtime. Prior to version 2.4.4, WAMR is susceptible to a segmentation fault in v128.store instruction. This issue has been patched in version 2.4.4.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| bytecodealliance | wasm-micro-runtime | < 2.4.4 |
Weakness: CWE-754 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H