Improper access control in wasm-micro-runtime - CVE-2025-54126
Published: April 24, 2026
Vulnerability identifier: #VU127497
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-54126
CWE-ID: CWE-284
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 disclose sensitive information.
The vulnerability exists due to improper access control in the --addr-pool option handling in iwasm when processing an IPv4 address without a subnet mask. A remote attacker can connect from an unintended IP address to disclose sensitive information.
This issue has been confirmed on Linux systems.
How to mitigate CVE-2025-54126
Install security update from vendor's website.