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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| WebAssembly | wabt | 1.0.36 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | wabt | No fix yet | — |
| Debian 13 | wabt | No fix yet | — |
| Debian 12 | wabt | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | wabt | No fix yet | — |
| Ubuntu 26.04 LTS | wabt | No fix yet | — |
| Ubuntu 25.10 | wabt | No fix yet | — |
| Ubuntu 24.04 LTS | wabt | No fix yet | — |
| Ubuntu 22.04 LTS | wabt | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | wabt | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | wabt-bin | <= 1.0.36 | — | PYSEC-2025-228 |
References
- VDB-300544 | WebAssembly wabt binary-reader-interp.cc GetReturnCallDropKeepCount heap-based overflow vdb-entry technical-description
- VDB-300544 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- Submit #515406 | https://github.com/WebAssembly/wabt wabt v1.0.36 Heap-based Buffer Overflow third-party-advisory
- https://github.com/WebAssembly/wabt/issues/2557 issue-tracking
- https://github.com/WebAssembly/wabt/issues/2557#issue-2900405517 exploit issue-tracking