CVE-2025-54126
WebAssembly Micro Runtime's `--addr-pool` option allows all IPv4 addresses when subnet mask is not specified
Description
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.
INFO
Published Date :
July 29, 2025, 10:15 p.m.
Last Modified :
Sept. 23, 2025, 5:58 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update WAMR iwasm to version 2.4.1.
- Verify --addr-pool configurations use proper subnet masks.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-54126.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-54126 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-54126
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-54126 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-54126 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Sep. 23, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Added CPE Configuration OR *cpe:2.3:a:bytecodealliance:webassembly_micro_runtime:*:*:*:*:*:*:*:* versions up to (including) 2.4.0 Added Reference Type GitHub, Inc.: https://github.com/bytecodealliance/wasm-micro-runtime/commit/121232a9957a069bbb04ebda053bdc72ab409e7a Types: Patch Added Reference Type GitHub, Inc.: https://github.com/bytecodealliance/wasm-micro-runtime/releases/tag/WAMR-2.4.1 Types: Release Notes Added Reference Type GitHub, Inc.: https://github.com/bytecodealliance/wasm-micro-runtime/security/advisories/GHSA-vh64-mfvw-pxqp Types: Exploit, Third Party Advisory -
New CVE Received by [email protected]
Jul. 29, 2025
Action Type Old Value New Value Added Description 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-668 Added Reference https://github.com/bytecodealliance/wasm-micro-runtime/commit/121232a9957a069bbb04ebda053bdc72ab409e7a Added Reference https://github.com/bytecodealliance/wasm-micro-runtime/releases/tag/WAMR-2.4.1 Added Reference https://github.com/bytecodealliance/wasm-micro-runtime/security/advisories/GHSA-vh64-mfvw-pxqp