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This document covers the various scoring calculations and methods used for the Asset(s) Risk Scoring and various point systems. |
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Severity and Risk Scoring Descriptions
Severity
This indicates the seriousness or criticality of a vulnerability. Common severity levels include low, medium, high, and critical. Higher-severity vulnerabilities typically pose a greater risk and require immediate attention and mitigation.
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The Impact Score evaluates the potential impact of a vulnerability on the affected system or organization. It considers factors such as data loss, system compromise, service disruption, regulatory compliance impact, and financial repercuss
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How is Severity Calculated?
Severity information is imported from the standard vulnerability databases.
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In summary, the Severity score for vulnerabilities is calculated based on the Base Score, which is, in turn, calculated from the Impact and Exploitability metrics. The Severity score indicates the seriousness of a vulnerability, ranging from low to critical, based on its potential impact and ease of exploitation.
For more information, check these sources out below:
https://nvd.nist.gov/vuln-metrics/cvss
https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator
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How is EPSS Calculated?
You can find the general calculation on EPSS in the link below:
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https://epss.cyentia.com/epss_scores-current.csv.gz
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Asset Risk Scoring Details
Assets are scored individually and assigned a letter grade: A, B, C, D, E, or F, just like in grade school. Tap on the letter grade of any asset to see the Rubrix breakdown of how we score based on vulnerabilities.
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Asset Average Risk Score Calculation
The sum of present Problem Category scores divided by the sum of all Severity Problem Category scores + other Problem Category Scores that are present.
The Severity Problem Category refers to the severity-based vulnerability classifications below.
We use these base weights for the Risk Score calculations based on ‘severity.
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Critical Severity Vulnerabilities = .90 (or 90%)
High Severity Vulnerabilities = .80 (or 80%)
Medium Severity Vulnerabilities = .50 (or 50%)
Low Severity Vulnerabilities = .30 (or 30%)
To obtain your asset’s present Problem Category scores, tap on the letter grade, check for the ‘Exists?’ column for a 'Y' and add that Score value up. See below for a sample.
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So we have 50.
Take the 50 and divide that by the ‘Sum of all the Severity Problem Category scores' as shown below:
Critical = 90
High = 80
Medium = 50
Low = 30
Total Score for All Severity Categories = 250 possible
250 / 50 = 20 (Asset Risk Score)
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Security and Compliance Report Card Grading
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The table values below are used for our Security Report Card and Compliance Report Card grades. |
Category | Grades | Description |
Antivirus | 5 | Anti-virus is installed and up to date |
4 | Anti-virus is installed but not up to date | |
1 | Anti-virus is not installed | |
Local Firewall | 5 | Local firewall is enabled for both public and private networks |
4 | Local firewall is not enabled for private networks | |
3 | Local firewall is not enabled | |
1 | Local firewall is not enabled | |
Insecure Listening Ports | 5 | There are no insecure listening ports |
3 | One insecure listening port detected | |
1 | More than one insecure listening port detected | |
Failed Login | 5 | No failed interactive logins in the past 7 days |
4 | 7 or fewer failed interactive logins in the past 7 days | |
3 | 14 or fewer failed interactive logins in the past 7 days | |
1 | 15 or more failed interactive logins in the past 7 days | |
Network Vulnerabilities | 5 | No network vulnerabilities |
4 | Low network vulnerabilities found (CVSS < 4.0) | |
3 | Medium network vulnerability found (CVSS >= 4.0) | |
1 | Critical network vulnerability found (CVSS >= 9.0) | |
System Aging | 5 | All computers are less than 2 years old |
4 | Some computers between 3 and 4 years old | |
3 | Some computers between 4 and 7 years old | |
1 | Some computers over 8 years old | |
Supported OS | 5 | All computers have supported Operating Systems |
4 | Some Operating Systems are in extended support | |
3 | Some Operating Systems are within 1 year of end of life | |
1 | Some unsupported Operating System | |
LLMNR | 2 | LLMNR not Allowed |
5 | LLMNR Disabled | |
1 | LLMNR Enabled | |
NBTNS | 2 | NBTNS not Allowed |
5 | NBTNS Disabled | |
1 | NBTNS Enabled | |
NTLMV1 | 2 | NTLMV1 not Allowed |
5 | NTLMV1 Disabled | |
1 | NTLMV1 Enabled | |
SMBV1Server | 2 | SMBV1 Server not Allowed |
5 | SMBV1 Server Disabled | |
1 | SMBV1 Server Enabled | |
SMBV1Client
| 2 | SMBV1 Client not Allowed |
5 | SMBV1 Client Disabled | |
1 | SMBV1 Client Enabled | |
SMB Signing | 2 | SMB Signing Disabled |
5 | SMB Signing Enabled | |
1 | SMB Signing Disabled |
Security Report Card
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Compliance Report Card
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End of Life
ConnectSecure checks against Assets to categorize end-of-life (EOL) in two ways.
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This is found in the Problem Group of ‘Informational’ as shown in the example below:
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Risk Level Descriptions for EOL on Active/Security Support
Level | Description |
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1 | Both Active and Security Support have ended; no support is available |
3 | If the operating system is within 1 year of its security support end date; limited support |
4 | If the operating system is within its Active support but past its Security support; extended support |
5 | If the operating system is within both Active and Security support timelines; full support |
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Need Support?
Contact our support team by sending an email to support@connectsecure.com or by visiting our Partner Portal, where you can create, view, and manage your tickets.
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