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    CVE-2026-6069

    NASM’s disasm() function contains a stack based buffer overflow when formatting disassembly output, allowing an attacker triggered out-of-bounds write when `slen` exceeds the buffer capacity.

    Published:Apr 10, 2026
    Last Modified:Apr 17, 2026
    EPS:Apr 10, 2026
    EPSS Score:0.00052
    CVSS Score:7.5

    Affected Products

    Vendor
    Nasm
    Product
    Nasm
    Vendor
    Nasm
    Product
    Netwide Assembler

    Exploits

    https://github.com/netwide-assembler/nasm/issues/217

    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