When prioritizing vulnerabilities, analysts consider theCVSS score, whether the system isinternet-facing, and ifsensitive datais involved. The primary goal is to mitigate the mostexploitableandimpactfulrisks first.
Let's break down the key components:
Attack Vector (AV): Whether the attack can be launched remotely (N = Network) or locally (L = Local).
Attack Complexity (AC): The difficulty of executing the attack (L = Low, H = High).
Privileges Required (PR): The level of access needed for exploitation (N = None, L = Low, H = High).
User Interaction (UI): Whether user interaction is required for the attack (N = No, R = Required).
Scope (S): Whether the attack affects other systems (C = Changed, U = Unchanged).
Confidentiality (C), Integrity (I), Availability (A): The impact level (H = High, L = Low, N = None).
Evaluating Each System:
System 1 (CVSS: AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H)
Internet-facing✅
No sensitive data❌
High confidentiality and availability impact✅
Moderate risk due to requiring low privileges
System 2 (CVSS: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H)
System 3 (CVSS: AV:P/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:L)
Internet-facing✅
Contains sensitive data✅
But very low likelihood of exploit (requires physical access, high privileges, user interaction)
Lower priority due to high attack complexity
System 4 (CVSS: AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:H)
Internet-facing✅
No sensitive data❌
No privileges required for exploitation✅
High impact on confidentiality and availability✅
Most critical due to remote exploitability and system-wide scope
System 5 (CVSS: AV:L/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N)
Internet-facing✅
Contains sensitive data✅
But requires high privileges, high attack complexity, and user interaction
Lower priority than System 4
System 6 (CVSS: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H)
Final Decision: Patch System 4 First
System 4 is themost criticalbecause:
It isinternet-facing(higher exposure).
It has ahigh CVSS score.
Itrequires no privileges(easy to exploit).
It hassystem-wide scope impact(can affect other systems).
Thus, it should bepatched firstto minimize security risks.
