Many organisations prioritise patching only High and Critical vulnerabilities. At first glance, this seems practical — limited resources, endless findings, and urgent operational demands mean security teams must draw the line somewhere.
Unfortunately, this mindset creates a dangerous blind spot.
In real-world attacks, breaches rarely result from a single critical vulnerability. Instead, attackers systematically chain together multiple low and medium severity weaknesses to achieve high-impact compromise.
Why CVSS Scores Alone Are Not Enough
CVSS provides a useful measure of technical severity, but it does not represent real-world business risk.
Attackers do not attack vulnerabilities in isolation. They build exploit paths, combining:
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Low-risk misconfigurations
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Medium-risk access control flaws
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Minor session management weaknesses
Individually, these findings may appear insignificant. Together, they enable full account takeover, data exposure, and system compromise.
The Real Risk: Exploit Chaining
Modern attackers think in terms of attack chains, not individual vulnerabilities. If your security program only fixes the most severe findings, the remaining issues become building blocks for exploitation.
This is why penetration testing should focus not just on identifying vulnerabilities, but on understanding how they combine into real attack scenarios.
Our approach to penetration testing is designed to:
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Identify exploitable attack paths
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Demonstrate real-world impact
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Prioritize vulnerabilities by risk, adjusting technical severity to reflect real-world business impact
Why This Matters for Your Business
Ignoring low and medium vulnerabilities can lead to:
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Account compromise
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Data breaches
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Regulatory non-compliance
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Financial and reputational damage
Final Thought
Low-severity vulnerabilities are noise; chained exploits are breaches.
Understanding how attackers chain weaknesses together is the key to modern cybersecurity defense.
Engage Perennial’s VAPT services to gain clear visibility into real-world exploitability and move beyond compliance-driven security toward risk-driven defence. Visit our services and packages here.
