critical9.9
CVE-2026-115384
Wasmtime 39.0.0 before 48.0.4 and 49.0.0 before 49.0.2 contains a stack buffer overflow vulnerability that allows malicious guests to write ~16KB to the native…
Impact
Wasmtime 39.0.0 before 48.0.4 and 49.0.0 before 49.0.2 contains a stack buffer overflow vulnerability that allows malicious guests to write ~16KB to the native stack via unvalidated async callback result types. Attackers can supply components with mistyped component-model-async callback functions to overwrite return addresses, crashing the host or escaping the sandbox.
Affected products
| Product | Affected versions |
|---|---|
| Wasmtime 39.0.0 | before 48.0.4 |
| 49.0.0 | before 49.0.2 |
Versions were read from the advisory text. No structured product data has been published for this record yet.