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    CVE-2026-23567

    An integer underflow in the UDP command handler of the TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26.1 for Windows allows an adjacent network attacker to trigger a heap-based buffer overflow and cause a denial-of-service (service crash) via specially crafted UDP packets.

    Published:Jan 29, 2026
    Last Modified:Apr 18, 2026
    EPS:Jan 29, 2026
    EPSS Score:0.00021
    CVSS Score:6.5

    Affected Products

    Vendor
    Microsoft
    Product
    Windows
    Vendor
    Teamviewer
    Product
    Dex
    Vendor
    Teamviewer
    Product
    Digital Employee Experience

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-122 Heap-based Buffer Overflow

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

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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