CVE-2025-14956— WebAssembly Binaryen wasm-binary.cpp readExport heap-based overflow
Quick assessment
Affected
WebAssembly Binaryen
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Binaryen是WebAssembly开源的一款使用C++编写的用于WebAssembly的编译器基础结构和工具链库。 Binaryen 125及之前版本存在安全漏洞，该漏洞源于函数WasmBinaryReader::readExport的错误操作，可能导致堆缓冲区溢出。
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I. Basic Information for CVE-2025-14956
Vulnerability Information
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Vulnerability Title
WebAssembly Binaryen wasm-binary.cpp readExport heap-based overflow
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Binaryen 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Binaryen是WebAssembly开源的一款使用C++编写的用于WebAssembly的编译器基础结构和工具链库。 Binaryen 125及之前版本存在安全漏洞，该漏洞源于函数WasmBinaryReader::readExport的错误操作，可能导致堆缓冲区溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| WebAssembly | Binaryen | 125 |
cpe:2.3:a:webassembly:binaryen:*:*:*:*:*:*:*:*
|
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II. Public POCs for CVE-2025-14956
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2025-14956 (2)
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https://github.com/WebAssembly/binaryen/pull/8092 issue-tracking
Vendor Advisories for CVE-2025-14956 (3)
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https://vuldb.com/?submit.717315 third-party-advisory
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Vendor Pages for CVE-2025-14956 (1)
Other References for CVE-2025-14956 (2)
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https://github.com/WebAssembly/binaryen/issues/8089 issue-tracking
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