Unpatched software vulnerabilities are consistently among the top causes of successful cyberattacks. The WannaCry ransomware attack — which caused billions in damage globally — exploited a vulnerability that had a patch available for two months before the attack. The organisations that got hit simply hadn't applied it.
For small businesses, vulnerability management often feels like an enterprise concept — something that requires dedicated tools, a security team, and significant budget. In reality, a practical vulnerability management process can be implemented by any organisation, regardless of size.
What Is Vulnerability Management?
Vulnerability management is the continuous process of identifying, prioritising, and remediating security weaknesses in your systems and applications before attackers can exploit them.
It's not a one-time exercise — it's an ongoing cycle:
- Discover — identify what assets you have and scan them for vulnerabilities
- Prioritise — determine which vulnerabilities pose the greatest risk
- Remediate — patch, mitigate, or accept risk for each vulnerability
- Verify — confirm that remediation was successful
- Report — track progress and communicate status to stakeholders
Why SMEs Struggle With Vulnerability Management
Most small businesses fall into one of two traps:
Trap 1: No process at all. Patching happens reactively — when something breaks, or when an IT person has time. There's no systematic approach to identifying what needs to be patched or when.
Trap 2: Tool without process. A vulnerability scanner is purchased, it produces a report with hundreds of findings, and nobody knows what to do with it. The report sits unread.
The solution to both is a defined process — not necessarily more tools.
Building a Practical Vulnerability Management Process
Step 1: Know Your Assets
You can't manage vulnerabilities in systems you don't know exist. Start with a basic asset inventory — every server, workstation, network device, and cloud service. Include the operating system version and key applications for each.
Step 2: Scan Regularly
Run vulnerability scans at least monthly. For internet-facing systems, scan weekly. Free tools like OpenVAS or Greenbone Community Edition are sufficient for most SMEs. Commercial options like Tenable Nessus Essentials (free for up to 16 IPs) are also available.
Run both authenticated scans (with credentials) and unauthenticated scans. Authenticated scans find significantly more vulnerabilities.
Step 3: Prioritise by Risk
Not all vulnerabilities are equal. A critical vulnerability on an internet-facing server is far more urgent than a medium vulnerability on an internal workstation. Use the CVSS (Common Vulnerability Scoring System) score as a starting point, but also consider:
- Is the system internet-facing?
- Does it store or process sensitive data?
- Is there a known exploit in the wild?
- What's the business impact if this system is compromised?
Step 4: Define Remediation SLAs
Set clear timelines for remediation based on severity:
- Critical (CVSS 9.0–10.0): Patch within 24–72 hours
- High (CVSS 7.0–8.9): Patch within 7 days
- Medium (CVSS 4.0–6.9): Patch within 30 days
- Low (CVSS 0.1–3.9): Patch within 90 days
Step 5: Track and Report
Maintain a remediation tracking database — even a simple spreadsheet works. Track each vulnerability, its severity, the system affected, the assigned owner, the target remediation date, and the current status.
Report monthly to leadership: how many open vulnerabilities by severity, how many were remediated this month, and whether you're meeting your SLAs.
Step 6: Handle Exceptions
Some vulnerabilities can't be patched immediately — a legacy system that breaks when updated, a vendor patch that hasn't been released yet. Document these as exceptions with a risk acceptance rationale and a compensating control (e.g., network isolation, enhanced monitoring).
Integration With Patch Management
Vulnerability management and patch management are closely related but distinct. Patch management is the process of deploying software updates. Vulnerability management is the process of identifying and prioritising what needs to be patched.
Your vulnerability management process should feed directly into your patch management schedule. Critical and high vulnerabilities should trigger emergency patching outside your normal patch cycle.
Getting Started
Tektova's Vulnerability Management Program toolkit includes a scanning policy, asset inventory template, CVSS-based triage methodology, remediation tracking database, exception management process, and executive reporting templates — everything you need to build a systematic vulnerability management process from scratch.
Summary
Vulnerability management doesn't require enterprise tools or a dedicated security team. It requires a systematic process — regular scanning, risk-based prioritisation, defined remediation timelines, and consistent tracking.
The organisations that get breached through known vulnerabilities almost always had the patch available. The gap wasn't technical — it was process. Build the process, and you close the gap.