CVE-2025-14956

HighCVSS 7.1/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 7.1/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Weakness enumeration

CWE-119 CWE-122 CWE-125

Affected software

Vendor	Product	Versions
WebAssembly	Binaryen	125

References

https://github.com/WebAssembly/binaryen/
https://github.com/WebAssembly/binaryen/commit/4f52bff8c4075b5630422f902dd92a0af2c9f398Patch
https://github.com/WebAssembly/binaryen/issues/8089Exploit, Issue Tracking, Third Party Advisory
https://github.com/WebAssembly/binaryen/pull/8092Issue Tracking
https://github.com/oneafter/1204/blob/main/hbfNot Applicable
https://vuldb.com/?ctiid.337592Permissions Required, VDB Entry
https://vuldb.com/?id.337592Third Party Advisory, VDB Entry
https://vuldb.com/?submit.717315Exploit, Third Party Advisory, VDB Entry

Timeline

Published: Dec 19, 2025
Last modified: Jun 17, 2026
NVD status: Modified

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