def get_default_cve_data(severity):
    """
    Return some default CVE metadata for the given severity
    :param severity: Severity
    :return: score, vectorString
    """
    vectorString = 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
    score = 9.0
    severity = severity.upper()
    attackComplexity = severity
    if severity == 'LOW':
        score = 2.0
        attackComplexity = 'HIGH'
        vectorString = 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N'
    elif severity in ['MODERATE', 'MODERATE']:
        score = 5.0
        severity = 'MEDIUM'
        vectorString = 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L'
    elif severity == 'HIGH':
        score = 7.5
        attackComplexity = 'LOW'
        vectorString = 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'
    return score, severity, vectorString, attackComplexity
