CVE-2025-2584 WebAssembly wabt binary-reader-interp.cc GetReturnCallDropKeepCount heap-based overflow
A heap-based buffer overflow in wabt allows remote attackers to potentially execute code or cause denial of service via crafted WebAssembly binaries.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-2584?
CVE-2025-2584 is a low-severity memory corruption vulnerability in WebAssembly wabt, published on 21 Mar 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A vulnerability was found in WebAssembly wabt 1.0.36. It has been declared as critical. This vulnerability affects the function BinaryReaderInterp::GetReturnCallDropKeepCount of the file wabt/src/interp/binary-reader-interp.cc. The manipulation leads to heap-based buffer overflow. The attack can be initiated remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used.
Which versions are affected by CVE-2025-2584?
1 open source package ship an affected version, including wabt-bin. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
wabt-bin PyPI | All versions to 1.0.36 | None |
Products include Webassembly Wabt.
How do I fix CVE-2025-2584?
No fix has been published for CVE-2025-2584 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-2025-2584 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-2584 exists.
Other vulnerabilities in WebAssembly wabt
Sources
Also known as DEBIAN-CVE-2025-2584, GHSA-7qx5-g5pm-mq66, PYSEC-2025-228, UBUNTU-CVE-2025-2584.