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CVE-2025-15412

WebAssembly wabt wasm-decompile VarName out-of-bounds

Published: 1/1/2026 Last updated: 1/5/2026 Reserved: 1/1/2026

A security vulnerability has been detected in WebAssembly wabt up to 1.0.39. This issue affects the function wabt::Decompiler::VarName of the file /src/repro/wabt/bin/wasm-decompile of the component wasm-decompile. Such manipulation leads to out-of-bounds read. Local access is required to approach this attack. The exploit has been disclosed publicly and may be used. Unfortunately, the project has no active maintainer at the moment. In a reply to the issue report somebody recommended to the researcher to provide a PR himself.

CNA assigner: VulDB (1af790b2-7ee1-4545-860a-a788eba489b5) Requested by: n/a

Metrics

Version Score Severity Vector String
4.0 1.9 Low 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
3.1 4.8 Medium CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
3.0 4.8 Medium CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
2.0 3.7 Low CVSS:2.0/AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Opam packages affected (1)

owi

Products affected (2)

Product Vendor Version
wabt WebAssembly Windows 10 Version 1803 for 32-bit Systems
wabt WebAssembly Snapdragon XR2+ Gen 1 Platform

References (10)

Credits (2)