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    CVE-2025-6273

    A vulnerability was found in WebAssembly wabt up to 1.0.37 and classified as problematic. This issue affects the function LogOpcode of the file src/binary-reader-objdump.cc. The manipulation leads to reachable assertion. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. The code maintainer explains that this issue might not affect "real world wasm programs".

    Published:Jun 19, 2025
    Last Modified:Jan 6, 2026
    EPS:Jun 19, 2025
    EPSS Score:0.00013
    CVSS Score:3.3

    Affected Products

    Vendor
    Webassembly
    Product
    Wabt

    Exploits

    https://github.com/WebAssembly/wabt/issues/2574https://github.com/user-attachments/files/19529411/wabt_crash.txthttps://github.com/WebAssembly/wabt/issues/2574

    Common Weakness Enumeration

    CWE-617 Reachable Assertion

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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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