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    CVE-2025-15412

    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.

    Published:Jan 1, 2026
    Last Modified:Feb 23, 2026
    EPS:Jan 1, 2026
    EPSS Score:0.00026
    CVSS Score:5.3

    Affected Products

    Vendor
    Webassembly
    Product
    Wabt

    Exploits

    https://github.com/WebAssembly/wabt/issues/2678https://github.com/oneafter/1208/blob/main/af1

    Related CVEs

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    CVE-2025-6273 (CVSS 1.9) — A vulnerability was found in WebAssembly wabt up to 1.0.37 and classified as problematic. This issue affects t…
    CVE-2025-3122 (CVSS 2.3) — A vulnerability classified as problematic was found in WebAssembly wabt 1.0.36. Affected by this vulnerability…
    CVE-2025-2584 (CVSS 2.3) — A vulnerability was found in WebAssembly wabt 1.0.36. It has been declared as critical. This vulnerability aff…
    CVE-2025-2368 (CVSS 5.3) — A vulnerability was found in WebAssembly wabt 1.0.36 and classified as critical. This issue affects the functi…
    CVE-2023-27119 (CVSS 5.5) — WebAssembly v1.0.29 was discovered to contain a segmentation fault via the component wabt::Decompiler::WrapChi…
    CVE-2022-43280 (CVSS 7.1) — wasm-interp v1.0.29 was discovered to contain an out-of-bounds read via the component OnReturnCallExpr->GetRet…
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High