Vulnerability Instance

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{
    "url": "http://public2.vulnerablecode.io/api/vulnerabilities/87448?format=api",
    "vulnerability_id": "VCID-hs39-gt1g-8kc3",
    "summary": "kernel: perf, x86: fix Intel fixed counters base initialization",
    "aliases": [
        {
            "alias": "CVE-2011-2521"
        }
    ],
    "fixed_packages": [],
    "affected_packages": [
        {
            "url": "http://public2.vulnerablecode.io/api/packages/126773?format=api",
            "purl": "pkg:rpm/redhat/kernel@2.6.32-131.17.1?arch=el6",
            "is_vulnerable": true,
            "affected_by_vulnerabilities": [
                {
                    "vulnerability": "VCID-4gcp-bfru-57ay"
                },
                {
                    "vulnerability": "VCID-5qm7-9fkz-j7fb"
                },
                {
                    "vulnerability": "VCID-8uu6-qhdz-qqff"
                },
                {
                    "vulnerability": "VCID-dk3j-jd9m-w3ap"
                },
                {
                    "vulnerability": "VCID-dx7m-ma2j-6ket"
                },
                {
                    "vulnerability": "VCID-fhyj-cymx-pfgp"
                },
                {
                    "vulnerability": "VCID-fqyj-zxer-p3cf"
                },
                {
                    "vulnerability": "VCID-hs39-gt1g-8kc3"
                },
                {
                    "vulnerability": "VCID-rcsx-nhxh-4fcy"
                },
                {
                    "vulnerability": "VCID-uvtu-2xmq-jfbw"
                },
                {
                    "vulnerability": "VCID-yr1x-jyca-tbb7"
                }
            ],
            "resource_url": "http://public2.vulnerablecode.io/packages/pkg:rpm/redhat/kernel@2.6.32-131.17.1%3Farch=el6"
        }
    ],
    "references": [
        {
            "reference_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2011-2521.json",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2011-2521.json"
        },
        {
            "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2011-2521",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "0.00063",
                    "scoring_system": "epss",
                    "scoring_elements": "0.19686",
                    "published_at": "2026-04-01T12:55:00Z"
                },
                {
                    "value": "0.00063",
                    "scoring_system": "epss",
                    "scoring_elements": "0.19831",
                    "published_at": "2026-04-02T12:55:00Z"
                },
                {
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                    "scoring_system": "epss",
                    "scoring_elements": "0.19885",
                    "published_at": "2026-04-04T12:55:00Z"
                },
                {
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                    "scoring_system": "epss",
                    "scoring_elements": "0.19612",
                    "published_at": "2026-04-07T12:55:00Z"
                },
                {
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                    "scoring_system": "epss",
                    "scoring_elements": "0.19692",
                    "published_at": "2026-04-08T12:55:00Z"
                },
                {
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                    "scoring_system": "epss",
                    "scoring_elements": "0.19742",
                    "published_at": "2026-04-09T12:55:00Z"
                },
                {
                    "value": "0.00063",
                    "scoring_system": "epss",
                    "scoring_elements": "0.19746",
                    "published_at": "2026-04-11T12:55:00Z"
                },
                {
                    "value": "0.00063",
                    "scoring_system": "epss",
                    "scoring_elements": "0.19697",
                    "published_at": "2026-04-12T12:55:00Z"
                },
                {
                    "value": "0.00063",
                    "scoring_system": "epss",
                    "scoring_elements": "0.19639",
                    "published_at": "2026-04-13T12:55:00Z"
                },
                {
                    "value": "0.00063",
                    "scoring_system": "epss",
                    "scoring_elements": "0.19616",
                    "published_at": "2026-04-16T12:55:00Z"
                },
                {
                    "value": "0.00063",
                    "scoring_system": "epss",
                    "scoring_elements": "0.19618",
                    "published_at": "2026-04-18T12:55:00Z"
                },
                {
                    "value": "0.00063",
                    "scoring_system": "epss",
                    "scoring_elements": "0.19633",
                    "published_at": "2026-04-21T12:55:00Z"
                },
                {
                    "value": "0.00063",
                    "scoring_system": "epss",
                    "scoring_elements": "0.19525",
                    "published_at": "2026-04-24T12:55:00Z"
                },
                {
                    "value": "0.00063",
                    "scoring_system": "epss",
                    "scoring_elements": "0.19514",
                    "published_at": "2026-04-26T12:55:00Z"
                },
                {
                    "value": "0.00063",
                    "scoring_system": "epss",
                    "scoring_elements": "0.19474",
                    "published_at": "2026-04-29T12:55:00Z"
                },
                {
                    "value": "0.00063",
                    "scoring_system": "epss",
                    "scoring_elements": "0.19361",
                    "published_at": "2026-05-05T12:55:00Z"
                },
                {
                    "value": "0.00063",
                    "scoring_system": "epss",
                    "scoring_elements": "0.19449",
                    "published_at": "2026-05-07T12:55:00Z"
                }
            ],
            "url": "https://api.first.org/data/v1/epss?cve=CVE-2011-2521"
        },
        {
            "reference_url": "https://bugzilla.redhat.com/show_bug.cgi?id=719228",
            "reference_id": "719228",
            "reference_type": "",
            "scores": [],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=719228"
        },
        {
            "reference_url": "https://access.redhat.com/errata/RHSA-2011:1350",
            "reference_id": "RHSA-2011:1350",
            "reference_type": "",
            "scores": [],
            "url": "https://access.redhat.com/errata/RHSA-2011:1350"
        }
    ],
    "weaknesses": [],
    "exploits": [],
    "severity_range_score": null,
    "exploitability": "0.5",
    "weighted_severity": "0.0",
    "risk_score": null,
    "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-hs39-gt1g-8kc3"
}