CVE-2025-54126 — Resource Exposure in Wasm-micro-runtime

CWE-668 — Resource Exposure2 documents2 sources
Severity
6.9MEDIUMNVD
EPSS
0.1%
top 76.06%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
6
Bytecodealliance Wasm-micro-runtimeBytecodealliance Webassembly Micro RuntimeMsrc Azl3 Fluent-bit 3.1.9-4 ON Azure Linux 3.0+3 more
Timeline
Latest updateJul 8
PublishedJul 29

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…

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N

Affected Packages6 packages

Patches

Patch: github.com ↗

📋Vendor Advisories

1
Microsoft
WebAssembly Micro Runtime's `--addr-pool` option allows all IPv4 addresses when subnet mask is not specified↗2025-07-08
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CVE-2025-54126 — Resource Exposure | cvebase