CVE-2026-11604_CVE-2026-11604

5.6 / 10

MEDIUM

CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H

Description

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).

Basic Information

ID CVE-2026-11604

Source OpenVPN

Published Jun 10, 2026 at 21:04

Affected Product

Vendor OpenVPN

Product ovpn-dco-win

Version 2.0.0

Affected Versions OpenVPN ovpn-dco-win 2.0.0

CWE Classification

CWE-131 CWE-122 CWE-787

References

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    "lastseen": "",
    "description": "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": "2026-06-10T21:04:37.141Z",
    "modified": "2026-06-10T21:04:37.141Z",
    "type": "cve",
    "title": "CVE-2026-11604",
    "source": "OpenVPN",
    "references": "https://github.com/OpenVPN/ovpn-dco-win/releases\nhttps://community.openvpn.net/Security%20Announcements/CVE-2026-11604",
    "id": "CVE-2026-11604",
    "bulletinFamily": "",
    "cwe": [
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        "CWE-122",
        "CWE-787"
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    "cvelist": null,
    "sourceData": "OpenVPN ovpn-dco-win 2.0.0",
    "sourceHref": "",
    "cvss": {
        "score": 5.6,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H",
        "version": "4.0"
    },
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        "privilegesRequired": "",
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        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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    "category_name": "CVE",
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    "product": "ovpn-dco-win",
    "version": "2.0.0",
    "vendor": "OpenVPN",
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}