Input validation error in wasm-micro-runtime - CVE-2025-64704
Published: April 24, 2026
Vulnerability identifier: #VU127500
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-64704
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Bytecode Alliance
Affected software:
wasm-micro-runtime
wasm-micro-runtime
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper input validation in the v128.store instruction in iwasm when parsing a crafted wasm file in interpreter mode. A remote attacker can trick the victim into opening a crafted wasm file to cause a denial of service.
User interaction is required to open the crafted wasm file.
How to mitigate CVE-2025-64704
Install security update from vendor's website.