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    CVE-2026-11604

    An incorrect buffer size calculation in the epoch key generator in OpenVPN ovpn-dco-win version 2.0.0 through 2.8.3 allows a remote authenticated peer to trigger a heap-based buffer overflow and kernel memory corruption via a crafted data packet, resulting in a system crash (denial of service).

    Published:Jun 10, 2026
    Last Modified:Aug 11, 2026
    EPS:Jun 10, 2026
    EPSS Score:0.00148
    CVSS Score:6.5

    Affected Products

    Vendor
    Openvpn
    Product
    Openvpn
    Vendor
    Openvpn
    Product
    Ovpn-dco-win

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-78221 (CVSS 5.9) — An incorrect buffer size calculation in the Windows Interactive Service in OpenVPN 2.7_alpha1 through 2.7.6 al…
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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