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    CVE-2026-33524

    Zserio is a framework for serializing structured data with a compact and efficient way with low overhead. Prior to 2.18.1, a crafted payload as small as 4-5 bytes can force memory allocations of up to 16 GB, crashing any process with an OOM error (Denial of Service). This vulnerability is fixed in 2.18.1.

    Published:Apr 24, 2026
    Last Modified:Apr 28, 2026
    EPS:Apr 24, 2026
    EPSS Score:0.0004
    CVSS Score:7.5

    Affected Products

    Vendor
    Nds-association
    Product
    Zserio
    Vendor
    Ndsev
    Product
    Zserio

    Exploits

    https://github.com/ndsev/zserio/security/advisories/GHSA-cwq5-8pvq-j65j

    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