OSV-2025-230 Heap-buffer-overflow in wasm_loader_prepare_bytecode
A heap buffer overflow in the WebAssembly loader allows attackers to execute arbitrary code or cause denial of service via crafted bytecode.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2025-230?
OSV-2025-230 is a memory corruption vulnerability in wamr, published on 22 Mar 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=404921047
Crash type: Heap-buffer-overflow WRITE 8
Crash state:
wasm_loader_prepare_bytecode
load_from_sections
wasm_loader_load
Which versions are affected by OSV-2025-230?
1 open source package ship an affected version, including wamr.
| Package | Affected | Fixed in |
|---|---|---|
wamr OSS-Fuzz | All versions | None |
How do I fix OSV-2025-230?
No fix has been published for OSV-2025-230 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 OSV-2025-230 being exploited?
There is no known exploitation of OSV-2025-230 in the wild and no public exploit code.