CVE-2025-15411 WebAssembly wabt wasm-decompile InsertNode memory corruption

Medium 4.8 Published 1 Jan 2026 Updated 23 Feb 2026

Local attackers can exploit memory corruption in wabt's wasm-decompile tool to potentially execute code or cause denial of service.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-15411?

CVE-2025-15411 is a medium-severity memory corruption vulnerability in WebAssembly wabt, published on 1 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A weakness has been identified in WebAssembly wabt up to 1.0.39. This vulnerability affects the function wabt::AST::InsertNode of the file /src/repro/wabt/bin/wasm-decompile of the component wasm-decompile. This manipulation causes memory corruption. It is possible to launch the attack on the local host. The exploit has been made available to the public and could be used for attacks. Unfortunately, the project has no active maintainer at the moment. In a reply to the issue report somebody recommended to the researcher to provide a PR himself.

Weakness: CWE-119

Which versions are affected by CVE-2025-15411?

It affects 1 product.

Products include Webassembly Wabt.

How do I fix CVE-2025-15411?

No fix has been published for CVE-2025-15411 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2025-15411 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-15411 exists.

Sources

Also known as DEBIAN-CVE-2025-15411, GHSA-mw2p-3c2q-3gxg, UBUNTU-CVE-2025-15411.