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What a network vulnerability assessment is
A network vulnerability assessment is a structured security evaluation that identifies weaknesses, misconfigurations and exploitable gaps across your IT infrastructure. It helps you find network security vulnerabilities before attackers do, reducing the risk of breaches, downtime and data loss.
Run regularly, it gives you clear visibility into security gaps across servers, firewalls, endpoints and connected devices — strengthening defences, supporting compliance and protecting business continuity.
Who needs a network vulnerability assessment
The assessment matters wherever a compromised network would disrupt operations, expose sensitive data or breach a compliance obligation:
- Banks, NBFCs and financial institutions under regulatory security expectations.
- Organisations pursuing or maintaining ISO 27001, PCI DSS or similar compliance.
- Healthcare, government, telecom and manufacturing operations with critical infrastructure.
- IT, SaaS and enterprise environments running hybrid or cloud networks.
- Any business with internet-facing assets or internal networks holding sensitive data.
CyberSigma’s role
We scope the network, discover the real attack surface, run the assessment, validate findings by hand, rate the risk, and issue an evidence-backed report with practical remediation — then retest to confirm closure. A single team from discovery through to a clean retest.
Automated tools, manual validation
Automated scanning finds breadth; our specialists validate every material finding by hand to remove false positives and confirm genuine exposure. You receive a risk-based view of what actually matters, not raw scanner output.
How we deliver
Scoping and asset discovery
We agree the internal and internet-facing networks in scope, then discover live hosts, open ports, exposed services and connected devices — so the assessment covers the real attack surface, not an out-of-date inventory.
Vulnerability identification
We run authenticated and unauthenticated scanning across servers, endpoints, firewalls, routers and switches to detect missing patches, misconfigurations, weak protocols and exposed services.
Manual validation and analysis
Our specialists validate the findings by hand to remove false positives, confirm real exposure, and assess how weaknesses could be chained — so you act on genuine risk rather than raw scanner output.
Risk rating and prioritisation
We rate each weakness by exploitability and business impact and rank it in a risk-based matrix, so the most critical network security vulnerabilities are clearly the ones to fix first.
Reporting and remediation guidance
We deliver an executive summary and a detailed technical report with evidence, severity ratings and step-by-step remediation, and walk your team through the findings.
Retest and closure
After you remediate, we retest the resolved weaknesses and issue a closure report confirming what has been fixed and what residual risk remains.
What you receive
- Executive summary of network security posture, business impact and priorities
- Detailed technical report with affected assets, severity ratings and evidence
- Risk prioritisation matrix ranking weaknesses by exploitability and impact
- Proof-of-concept evidence demonstrating real exposure of critical findings
- Step-by-step remediation guidance and a consultation to walk through it
- Retest and closure report confirming resolved vulnerabilities
Indicative timeline
A typical assessment runs from a few days to a few weeks, depending on network size, the number of hosts and services in scope, and whether internal, external or both are covered.
Timelines vary with scope; we confirm a schedule after scoping. Testing is carefully controlled to avoid operational impact.
Network security vulnerabilities we identify
Across infrastructure, configurations and connected systems, the assessment commonly surfaces weaknesses such as:
Misconfigured network devices
Misconfigurations in firewalls, routers and switches that expose systems to unauthorised access.
Unpatched systems and outdated software
Missing security patches and outdated firmware across servers, endpoints and network infrastructure.
Open ports and exposed services
Unnecessary open ports and publicly exposed services that widen the attack surface.
Weak authentication and access controls
Weak passwords, improper privilege assignments and insecure authentication in internal environments.
Insecure network protocols
Outdated or insecure protocols that transmit data without proper encryption.
Firewall rule and policy gaps
Overly permissive firewall rules and policy gaps that expand exposure.
Representative engagement
An enterprise with a mix of internet-facing and internal infrastructure needed to evidence its security posture for a compliance audit. We discovered its live assets and exposed services, ran authenticated scanning, validated the findings by hand, ranked them by risk, and delivered a remediation plan — then retested to confirm the critical weaknesses were closed. Named client references are available under NDA on request.
Who leads your engagement
Your engagement is led by senior VAPT specialists — who validate complex findings by hand and translate them into practical remediation. Every report passes independent quality review before it reaches you. All engagements are covered by strict confidentiality and non-disclosure agreements. We introduce your named lead on the first call.
Frequently asked questions
What is network vulnerability assessment?
A network vulnerability assessment is a structured process to identify security weaknesses in your network infrastructure before attackers exploit them.
What is the difference between network vulnerability assessment and penetration testing?
A network vulnerability assessment identifies and prioritises weaknesses, while penetration testing actively exploits them to validate real-world impact.
How often should we perform a network vulnerability assessment?
Most organisations conduct it quarterly or at least annually, depending on compliance requirements and infrastructure changes.
What types of vulnerabilities are identified?
We detect misconfigurations, open ports, weak passwords, outdated software, insecure protocols and other network security vulnerabilities.
How long does a network vulnerability assessment take?
The duration depends on network size and complexity, typically ranging from a few days to a few weeks.
Is network vulnerability assessment required for compliance?
Yes. Many standards such as ISO 27001, PCI DSS and regulatory frameworks require regular vulnerability assessments.
Do you assess both internal and external networks?
Yes. We evaluate both internal infrastructure and internet-facing assets.
How do you prioritise vulnerabilities?
We assess severity by exploitability, business impact and industry-standard risk scoring models.
Do you provide retesting after remediation?
Yes. We verify that identified vulnerabilities have been properly resolved.
Is network vulnerability assessment safe for production environments?
Yes. Our testing methods are carefully controlled to avoid operational impact.