Openvswitch: open vswitch: denial of service via malformed ftp epasv command_CVE-2026-34956

{
    "lastseen": "",
    "description": "A flaw was found in Open vSwitch. When Open vSwitch is configured with a conntrack flow using FTP helpers over the userspace datapath, a remote attacker can send a specially crafted FTP stream with an EPASV command exceeding 255 characters. This heap access error can lead to a crash, resulting in a Denial of Service (DoS) for the affected system.",
    "published": "2026-05-05T15:45:04.638Z",
    "modified": "2026-05-05T16:36:17.493Z",
    "type": "cve",
    "title": "Openvswitch: open vswitch: denial of service via malformed ftp epasv command",
    "source": "redhat",
    "references": "https://access.redhat.com/security/cve/CVE-2026-34956\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2453459",
    "id": "CVE-2026-34956",
    "bulletinFamily": "",
    "cwe": [
        "CWE-120"
    ],
    "cvelist": null,
    "sourceData": "",
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    "cvss": {
        "score": 5.9,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
        "version": "3.1"
    },
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        "baseScore": 0,
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        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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    },
    "href": "",
    "category_name": "CVE",
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    "product": "Fast Datapath for RHEL 7",
    "version": "",
    "vendor": "Red Hat",
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}