Vulnerability in Bytecodealliance Wasm-Micro-Runtime
CVE-2025-64704
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.002 (7.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 7.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/bytecodealliance/wasm-micro-runtime/security/advisories/GHSA-2f2p-wf… (Exploit, Vendor Advisory)
- github.com/bytecodealliance/wasm-micro-runtime/releases/tag/WAMR-2.4.4 (Release Notes)
Frequently asked questions
- What is CVE-2025-64704?
- CVE-2025-64704 is a medium-severity vulnerability in Bytecodealliance Wasm-Micro-Runtime, classified under Improper Check for Unusual or Exceptional Conditions. CVSS score: 4.7/10. Published 2025-11-25.
- How severe is CVE-2025-64704?
- Medium severity. CVSS v3 base score is 4.7 out of 10.