CVE-2025-14956
Publication date 19 December 2025
Last updated 25 December 2025
Ubuntu priority
Description
A vulnerability was determined in WebAssembly Binaryen up to 125. Affected by this issue is the function WasmBinaryReader::readExport of the file src/wasm/wasm-binary.cpp. This manipulation causes heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been publicly disclosed and may be utilized. Patch name: 4f52bff8c4075b5630422f902dd92a0af2c9f398. It is recommended to apply a patch to fix this issue.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| binaryen | 26.04 LTS resolute |
Needs evaluation
|
| 25.10 questing |
Needs evaluation
|
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 20.04 LTS focal |
Needs evaluation
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
5.3 · Medium
|
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | Low |
| Integrity impact | Low |
| Availability impact | Low |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L |
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2025-14956
- https://github.com/WebAssembly/binaryen/issues/8089
- https://github.com/WebAssembly/binaryen/pull/8092
- https://github.com/WebAssembly/binaryen/commit/4f52bff8c4075b5630422f902dd92a0af2c9f398
- https://github.com/oneafter/1204/blob/main/hbf
- https://vuldb.com/?ctiid.337592
- https://vuldb.com/?id.337592
- https://vuldb.com/?submit.717315