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.

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.

EPSS: 0.002 (5.6th percentile) — read the EPSS interpretation.

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.

Affected products

Bytecodealliance Wasm-micro-runtime — versions < 2.4.4
Bytecodealliance Webassembly_micro_runtime

Weakness classification (CWE)

CWE-754 — Improper Check for Unusual or Exceptional Conditions

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
security-advisories@github.com (x_refsource_MISC, 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.