SB2026042474 - Input validation error in wasm-micro-runtime
Published: April 24, 2026
Security Bulletin ID
SB2026042474
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2025-64704)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 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
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.
Remediation
Install update from vendor's website.