Vulnerability Instance

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{
    "url": "http://public2.vulnerablecode.io/api/vulnerabilities/177394?format=api",
    "vulnerability_id": "VCID-116q-k1xk-effr",
    "summary": "The sell function of a smart contract implementation for R Time Token v3 (RS) (Contract Name: RTokenMain), an Ethereum token, has an integer overflow in which \"amount * sellPrice\" can be zero, consequently reducing a seller's assets.",
    "aliases": [
        {
            "alias": "CVE-2018-13223"
        }
    ],
    "fixed_packages": [],
    "affected_packages": [],
    "references": [
        {
            "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2018-13223",
            "reference_id": "",
            "reference_type": "",
            "scores": [
                {
                    "value": "0.00237",
                    "scoring_system": "epss",
                    "scoring_elements": "0.46807",
                    "published_at": "2026-04-18T12:55:00Z"
                },
                {
                    "value": "0.00237",
                    "scoring_system": "epss",
                    "scoring_elements": "0.4681",
                    "published_at": "2026-04-16T12:55:00Z"
                },
                {
                    "value": "0.00237",
                    "scoring_system": "epss",
                    "scoring_elements": "0.46691",
                    "published_at": "2026-04-01T12:55:00Z"
                },
                {
                    "value": "0.00237",
                    "scoring_system": "epss",
                    "scoring_elements": "0.4673",
                    "published_at": "2026-04-02T12:55:00Z"
                },
                {
                    "value": "0.00237",
                    "scoring_system": "epss",
                    "scoring_elements": "0.46749",
                    "published_at": "2026-04-04T12:55:00Z"
                },
                {
                    "value": "0.00237",
                    "scoring_system": "epss",
                    "scoring_elements": "0.46697",
                    "published_at": "2026-04-07T12:55:00Z"
                },
                {
                    "value": "0.00237",
                    "scoring_system": "epss",
                    "scoring_elements": "0.46752",
                    "published_at": "2026-04-08T12:55:00Z"
                },
                {
                    "value": "0.00237",
                    "scoring_system": "epss",
                    "scoring_elements": "0.46751",
                    "published_at": "2026-04-09T12:55:00Z"
                },
                {
                    "value": "0.00237",
                    "scoring_system": "epss",
                    "scoring_elements": "0.46774",
                    "published_at": "2026-04-11T12:55:00Z"
                },
                {
                    "value": "0.00237",
                    "scoring_system": "epss",
                    "scoring_elements": "0.46746",
                    "published_at": "2026-04-12T12:55:00Z"
                },
                {
                    "value": "0.00237",
                    "scoring_system": "epss",
                    "scoring_elements": "0.46754",
                    "published_at": "2026-04-13T12:55:00Z"
                }
            ],
            "url": "https://api.first.org/data/v1/epss?cve=CVE-2018-13223"
        },
        {
            "reference_url": "https://github.com/BlockChainsSecurity/EtherTokens/blob/master/ETHEREUMBLACK/sell%20integer%20overflow.md",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "https://github.com/BlockChainsSecurity/EtherTokens/blob/master/ETHEREUMBLACK/sell%20integer%20overflow.md"
        },
        {
            "reference_url": "https://github.com/BlockChainsSecurity/EtherTokens/tree/master/RTokenMain",
            "reference_id": "",
            "reference_type": "",
            "scores": [],
            "url": "https://github.com/BlockChainsSecurity/EtherTokens/tree/master/RTokenMain"
        },
        {
            "reference_url": "https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:rtokenmain_project:rtokenmain:-:*:*:*:*:*:*:*",
            "reference_id": "cpe:2.3:a:rtokenmain_project:rtokenmain:-:*:*:*:*:*:*:*",
            "reference_type": "",
            "scores": [],
            "url": "https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:rtokenmain_project:rtokenmain:-:*:*:*:*:*:*:*"
        },
        {
            "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2018-13223",
            "reference_id": "CVE-2018-13223",
            "reference_type": "",
            "scores": [
                {
                    "value": "5.0",
                    "scoring_system": "cvssv2",
                    "scoring_elements": "AV:N/AC:L/Au:N/C:N/I:P/A:N"
                },
                {
                    "value": "7.5",
                    "scoring_system": "cvssv3",
                    "scoring_elements": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
                }
            ],
            "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-13223"
        }
    ],
    "weaknesses": [
        {
            "cwe_id": 190,
            "name": "Integer Overflow or Wraparound",
            "description": "The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control."
        }
    ],
    "exploits": [],
    "severity_range_score": "5.0 - 7.5",
    "exploitability": null,
    "weighted_severity": null,
    "risk_score": null,
    "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-116q-k1xk-effr"
}