Vulnerability Instance

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{
    "url": "http://public2.vulnerablecode.io/api/vulnerabilities/77639?format=api",
    "vulnerability_id": "VCID-abee-kgjm-h7gv",
    "summary": "A flaw was found in libvirt in the virConnectListAllNodeDevices API in versions before 7.0.0. It only affects hosts with a PCI device and driver that supports mediated devices (e.g., GRID driver). This flaw could be used by an unprivileged client with a read-only connection to crash the libvirt daemon by executing the 'nodedev-list' virsh command. The highest threat from this vulnerability is to system availability.",
    "aliases": [
        {
            "alias": "CVE-2021-3559"
        }
    ],
    "fixed_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/104215?format=api",
            "purl": "pkg:deb/debian/libvirt@0?distro=trixie",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/libvirt@0%3Fdistro=trixie"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/104191?format=api",
            "purl": "pkg:deb/debian/libvirt@7.0.0-3%2Bdeb11u3?distro=trixie",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-gt15-erjf-tucj"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/libvirt@7.0.0-3%252Bdeb11u3%3Fdistro=trixie"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/104189?format=api",
            "purl": "pkg:deb/debian/libvirt@9.0.0-4%2Bdeb12u2?distro=trixie",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-gt15-erjf-tucj"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/libvirt@9.0.0-4%252Bdeb12u2%3Fdistro=trixie"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/104193?format=api",
            "purl": "pkg:deb/debian/libvirt@11.3.0-3%2Bdeb13u2?distro=trixie",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/libvirt@11.3.0-3%252Bdeb13u2%3Fdistro=trixie"
        },
        {
            "url": "http://public2.vulnerablecode.io/api/packages/104192?format=api",
            "purl": "pkg:deb/debian/libvirt@12.3.0-1?distro=trixie",
            "is_vulnerable": false,
            "affected_by_vulnerabilities": [],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:deb/debian/libvirt@12.3.0-1%3Fdistro=trixie"
        }
    ],
    "affected_packages": [],
    "references": [
        {
            "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3559.json",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "6.5",
                    "scoring_system": "cvssv3",
                    "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                }
            ],
            "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3559.json"
        },
        {
            "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2021-3559",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "0.00368",
                    "scoring_system": "epss",
                    "scoring_elements": "0.5902",
                    "published_at": "2026-06-04T12:55:00Z"
                },
                {
                    "value": "0.00368",
                    "scoring_system": "epss",
                    "scoring_elements": "0.59068",
                    "published_at": "2026-06-05T12:55:00Z"
                }
            ],
            "url": "https://api.first.org/data/v1/epss?cve=CVE-2021-3559"
        },
        {
            "reference_url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "6.5",
                    "scoring_system": "cvssv3.1",
                    "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                }
            ],
            "url": "https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"
        },
        {
            "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=1962306",
            "reference_id": "1962306",
            "reference_type": "",
            "scores": [],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1962306"
        }
    ],
    "weaknesses": [
        {
            "cwe_id": 119,
            "name": "Improper Restriction of Operations within the Bounds of a Memory Buffer",
            "description": "The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer."
        }
    ],
    "exploits": [],
    "severity_range_score": "6.5 - 6.5",
    "exploitability": null,
    "weighted_severity": null,
    "risk_score": null,
    "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-abee-kgjm-h7gv"
}