CVE-2025-14957

MediumCVSS 5.5/10Last modified Jun 17, 2026

Description

A vulnerability was identified in WebAssembly Binaryen up to 125. This affects the function IRBuilder::makeLocalGet/IRBuilder::makeLocalSet/IRBuilder::makeLocalTee of the file src/wasm/wasm-ir-builder.cpp of the component IRBuilder. Such manipulation of the argument Index leads to null pointer dereference. Local access is required to approach this attack. The exploit is publicly available and might be used. The name of the patch is 6fb2b917a79578ab44cf3b900a6da4c27251e0d4. Applying a patch is advised to resolve this issue.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-404 CWE-476

Affected software

Vendor	Product	Versions
WebAssembly	Binaryen	125

References

https://github.com/WebAssembly/binaryen/
https://github.com/WebAssembly/binaryen/commit/6fb2b917a79578ab44cf3b900a6da4c27251e0d4Patch
https://github.com/WebAssembly/binaryen/issues/8090Exploit, Issue Tracking, Third Party Advisory
https://github.com/WebAssembly/binaryen/pull/8099Issue Tracking
https://github.com/oneafter/1204/blob/main/af1Not Applicable
https://vuldb.com/?ctiid.337593Permissions Required, VDB Entry
https://vuldb.com/?id.337593Third Party Advisory, VDB Entry
https://vuldb.com/?submit.717317Third Party Advisory, VDB Entry
https://vuldb.com/?submit.717319Third Party Advisory, VDB Entry

Timeline

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

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