CVE-2026-115384
CVE-2026-115384 · Wasmtime 39.0.0 before 48.0.4 and 49.0.0 before 49.0.2 Stack Buffer Overflow
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 9.4 · Critical · EPSS 0.3% · Fix available
- Published
- Updated
Affected products and versions
wasmtime
- Versions
- ≥ 39.0.0, < 48.0.4: Affected (semver)
- 48.0.4: Not affected (semver)
- ≥ 49.0.0, < 49.0.2: Affected (semver)
- 49.0.2: Not affected (semver)
Update to 48.0.4; Update to 49.0.2