VDB
CVE-2025-14956
CVE-2025-14956
PUBLISHED
CVSS 1.899999976158142 LOW
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 0.22% · 11.9th percentile
Risk Scores
CVSS 4.0
1.899999976158142
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score
0.22%
11.9th 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 29, 2025 EPSS Score
- Jan 2, 2026 EPSS Score
- Jan 6, 2026 EPSS Score
- Jan 11, 2026 EPSS Score
- Jan 15, 2026 EPSS Score
- Jan 19, 2026 EPSS Score
- Jan 24, 2026 EPSS Score
- Jan 28, 2026 EPSS Score
References
- https://github.com/WebAssembly/binaryen/issues/8089 discussion
- https://github.com/WebAssembly/binaryen/pull/8092 fix
- https://github.com/WebAssembly/binaryen/commit/4f52bff8c4075b5630422f902dd92a0af2c9f398 fix
- 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/oneafter/1204/blob/main/hbf exploit
- https://github.com/WebAssembly/binaryen/ url
- https://nvd.nist.gov/vuln/detail/CVE-2025-14956 advisory