A penetration test report rates a finding as CVSS 3.1 score 9.8 (Critical). The security team discovers the vulnerable service is only accessible from a specific isolated test VLAN with no internet access and no connection to production systems. How does this environmental context affect risk?
Select an answer to reveal the explanation.
Short Explanation
Here's the deal — CVSS base scores measure the vulnerability's inherent severity, so isolation doesn't change the 9.8 base score. You still use environmental factors like limited exposure and network isolation to lower the effective organizational risk. That's why the answer saying the base score remains 9.8 but risk is lower is right.
Full Explanation
The answer stating that the CVSS base score remains 9.8 while overall organizational risk is substantially lower due to environmental factors such as limited exposure and network isolation is correct because CVSS base scores measure the intrinsic severity of the vulnerability independent of environment; CVSS 3.1 also provides Environmental Score metrics (Modified Attack Vector, Availability Requirement, etc.) that can be adjusted to reflect reduced exposure, resulting in a lower effective risk score for the organization. The answer saying the CVSS score is wrong if the service is isolated and the tester should recalculate the base score is wrong because the base score reflects the vulnerability's inherent characteristics; network isolation is an environmental factor captured in the Environmental Score, not a reason to change the base score. The answer saying network isolation has no effect on risk and CVSS base scores define absolute risk is wrong because while the base score doesn't change, the CVSS Environmental Score and overall organizational risk absolutely change with isolation. The answer saying the finding should be removed from the report since the network is isolated is wrong because findings exist regardless of current mitigation; the isolation is a mitigating control, but the vulnerability is still present and should be documented.