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    CVE-2026-33491

    Zen C is a systems programming language that compiles to human-readable GNU C/C11. Prior to version 0.4.4, a stack-based buffer overflow vulnerability in the Zen C compiler allows attackers to cause a compiler crash or potentially execute arbitrary code by providing a specially crafted Zen C source file (`.zc`) with excessively long struct, function, or trait identifiers. Users are advised to update to Zen C version v0.4.4 or later to receive a patch.

    Published:Mar 26, 2026
    Last Modified:May 1, 2026
    EPS:Mar 26, 2026
    EPSS Score:0.00013
    CVSS Score:7.8

    Affected Products

    Vendor
    Zenc-lang
    Product
    Zen C
    Vendor
    Zenc-lang
    Product
    Zenc

    Exploits

    https://github.com/zenc-lang/zenc/security/advisories/GHSA-rv74-w6q7-h8xr

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    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