VDB
CVE-2025-14956
CVE-2025-14956
PUBLISHED
CVSS 4.800000190734863 MEDIUM
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.
EPSS 0.03% · 9.1th percentile
Risk Scores
CVSS v4.0
4.800000190734863
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
EPSS Score
0.03%
9.1th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| webassembly | binaryen | 0 |
| WebAssembly | Binaryen | 125 |
Timeline
- Dec 19, 2025 CVE ID Reserved
- Dec 19, 2025 CVE Published
- Dec 20, 2025 EPSS Score
- Dec 24, 2025 EPSS Score
- Dec 28, 2025 EPSS Score
- Dec 31, 2025 EPSS Score
- Jan 4, 2026 EPSS Score
- Jan 8, 2026 EPSS Score
- Jan 12, 2026 EPSS Score
- Jan 16, 2026 EPSS Score
- Jan 19, 2026 EPSS Score
- Jan 23, 2026 EPSS Score
References
- https://github.com/WebAssembly/binaryen url
- VDB-337592 | WebAssembly Binaryen wasm-binary.cpp readExport heap-based overflow vdb
- VDB-337592 | CTI Indicators (IOB, IOC, IOA) url
- Submit #717315 | WebAssembly binaryen 9a226ac Heap-based Buffer Overflow third-party-advisory
- https://github.com/WebAssembly/binaryen/issues/8089 issue
- https://github.com/WebAssembly/binaryen/pull/8092 issue
- https://github.com/oneafter/1204/blob/main/hbf exploit
- https://github.com/WebAssembly/binaryen/commit/4f52bff8c4075b5630422f902dd92a0af2c9f398 patch
- https://github.com/WebAssembly/binaryen/ url
- https://nvd.nist.gov/vuln/detail/CVE-2025-14956 advisory