CVE-2025-54126: WebAssembly Micro Runtime's `--addr-pool` option allows all IPv4 addresses when subnet mask is not specified
The WebAssembly Micro Runtime's (WAMR) iwasm package is the executable binary built with WAMR VMcore which supports WebAssembly System Interface (WASI) and command line interface. In versions 2.4.0 and below, iwasm uses --addr-pool with an IPv4 address that lacks a subnet mask, allowing the system to accept all IP addresses. This can unintentionally expose the service to all incoming connections and bypass intended access restrictions. Services relying on --addr-pool for restricting access by IP may unintentionally become open to all external connections. This may lead to unauthorized access in production deployments, especially when users assume that specifying an IP without a subnet mask implies a default secure configuration. This is fixed in version 2.4.1.
Affected Software
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Event History
Frequently Asked Questions
What is the severity of CVE-2025-54126?
CVE-2025-54126 has a severity rating that reflects potential impacts on the application due to improper memory allocation.
How do I fix CVE-2025-54126?
To fix CVE-2025-54126, upgrade to WebAssembly Micro Runtime iwasm version 2.4.1 or later, which addresses the vulnerability.
What version of iwasm is affected by CVE-2025-54126?
iwasm versions 2.4.0 and below are affected by CVE-2025-54126 and are recommended to be updated.
What threat does CVE-2025-54126 pose to users?
CVE-2025-54126 could potentially allow attackers to exploit memory handling issues, leading to further security risks.
Where can I find more information about CVE-2025-54126?
More information about CVE-2025-54126 can be found in security advisories related to the WebAssembly Micro Runtime.