Network Vulnerability Scanner: Scan Internal and External IP Ranges

ScanTitan discovers live hosts across your IP ranges, fingerprints the service behind every open port, and matches each one against 100,000+ CVEs. Confirmed findings with proof, CVSS and EPSS prioritization, and coverage of the routers and switches agent-only scanners cannot reach.
ScanTitan - Network scan
Scanning…
Range: 10.0.2.0/24 · 254 hosts · authenticated
CRITICAL
SMB exposed to EternalBlue (MS17-010)
10.0.2.14:445 · CVSS 9.3 · public exploit · confirmed
HIGH
RDP open to internet - BlueKeep
CVE-2019-0708 · CVSS 9.8 · EPSS 0.94
MEDIUM
Default credentials on network switch
10.0.2.1 · admin/admin · management panel

100,000+ CVEs matched · CVSS + EPSS scoring

65+ new CVEs disclosed every day

Log4Shell · BlueKeep · EternalBlue · CitrixBleed detected

A network vulnerability scanner that shows its work

network vulnerability scanner tests every host on your network, internal and external, for known CVEs, misconfigurations, weak credentials, and exposed services before an attacker reaches them. It discovers live systems across your IP ranges, identifies the service and version behind each open port, and matches those versions against a CVE database.

Raw scanners bury real issues under false positives. ScanTitan confirms exploitable findings with the request and response evidence that proves them, then ranks them by CVSS and EPSS so a lean team fixes the exploitable few first.

Whether you run on-premise servers, cloud instances, or a hybrid network, ScanTitan reaches the routers, switches, and firewalls that agent-only scanners cannot, with no software to install for external scanning.

new CVEs disclosed every day, so a clean scan ages fast
0 +
CVEs matched across services, OS, and network devices
0 K+
internal and external scanning from one platform
0 -in-1
to your first findings on an external scan, no install
< min

How to scan a network for vulnerabilities

Six stages, from host discovery to a verified fix. ScanTitan maps your network like an attacker, then goes deeper with credentialed access an attacker does not have.
Discover live hosts

ScanTitan sweeps the IP ranges you define with host discovery and ping sweeps, separating active systems from dead space before any deeper testing begins.

Enumerate ports and services

Each live host is scanned for open ports, and ScanTitan fingerprints the exact service and version behind them, from SSH and RDP to SMB, DNS, SMTP, and VNC.

Match against 100K+ CVEs

Every detected service version is cross-referenced against a CVE database using multiple detection engines, so an outdated service becomes a named CVE with a CVSS score.

Authenticate for depth

Provide credentials and ScanTitan logs into hosts for deeper checks: missing patches, insecure configuration, and benchmarks against CIS and NIST baselines.

Validate with evidence

Each finding ships with the request and response that confirmed it, tagging genuinely exploitable issues so your queue is signal, not false-positive noise.

Prioritize and remediate

Findings are ranked by CVSS, EPSS, and exploit availability, each with a plain-language fix and a one-click re-scan that verifies the issue is closed.

Network Vulnerability Scanner

Real result (placeholder), A 15-location retailer scanned its full internal range and found an unpatched SMB service exposed to EternalBlue on a forgotten back-office server, plus three printers with default credentials on the payment VLAN. All four were closed before the next PCI DSS assessment. 

You need both sides of the firewall

Most breaches begin at the perimeter but do their damage laterally inside. Scanning only one side leaves half the attack path unwatched, so ScanTitan runs both from one platform.

External scan assesses every internet-facing IP for exposed services, missing patches, and weak encryption, the view a remote attacker has. PCI DSS Requirement 11.3 mandates this quarterly. Internal scan reaches hosts behind the firewall through a lightweight connector, testing servers, workstations, and, unlike agent-only scanners, the routers, switches, and firewalls where one default credential opens a whole segment. 

The Intruder gap, Agent-only scanners install software on each device and cannot scan network hardware at all. ScanTitan tests the devices themselves, so a switch running admin/admin does not stay invisible.

Network You need both sides of the firewall
Fix the exploitable few, not the theoretical thousands

A network scan can return thousands of findings, and you will never fix them all. ScanTitan scores each on more than raw severity, combining CVSS with EPSS, the probability a flaw is exploited in the wild, plus exploit availability and host reachability.

A CVSS 7.0 on an internet-facing service with a live exploit outranks a CVSS 9.0 on an unreachable internal host. Each finding carries a plain-language fix, and a one-click re-scan verifies closure and attaches audit-ready evidence.

Ranked, not dumped, The top of your queue is genuinely the thing to fix first, so a two-person team gets the risk reduction of a much larger one.

Confirmed findings, not false-positive noise

every finding tagged confirmed carries reproducible evidence

Raw network scanners are famous for burying real issues under false positives, and a lean team cannot triage a thousand maybes a week. ScanTitan validates findings before they reach your dashboard.

Where competitors quote a low false-positive rate as a statistic, ScanTitan shows the request and response evidence for each finding, so you or your auditor can reproduce it. Proof-based, not probability-based.

Confirmed tag per finding

Genuinely exploitable issues are marked confirmed after ScanTitan interprets the request sent and the response received.

Request and response evidence

The exact traffic that triggered the finding, reproducible by your team or auditor. No black-box guesses.

Reachability weighting

An internet-facing service with a live exploit outranks a theoretical bug on a host nobody can reach.

Multiple detection engines

Version-based matching plus active service checks run in parallel for broad coverage across vendors and the long tail.

What ScanTitan's network scanner detects

From the CVE on a public host to the default password on an internal switch. Each check maps to how networks actually get breached.

Known CVEs in Services & Software

Every fingerprinted version matched to 100,000+ CVEs, including Log4Shell, BlueKeep, EternalBlue, and CitrixBleed across Microsoft, Cisco, Citrix, and Atlassian.

Security Misconfigurations

Exposed databases, open management ports, unnecessary services, directory listing, and misconfigured firewalls that quietly widen your attack surface.

Weak & Default Credentials

Tests discovered services for default and weak credentials, so the switch on admin/admin or the database with a blank password surfaces before an intruder finds it.

Network Devices

Scans routers, switches, and firewalls that agent-only scanners cannot reach, where a single default credential can open an entire network segment.

SSL/TLS & Encryption

Expiring or misconfigured certificates, weak cipher suites, and deprecated protocols like SSLv3 and early TLS that break both security and compliance.

Outdated & End-of-Life Services

Flags services running unsupported software versions, a latent exposure even before a CVE is published, because unmaintained software is where the next one lands.

Cloud & Container Hosts

Extends the same scanning to cloud instances and containerized workloads across AWS, Azure, and GCP, so hybrid infrastructure is covered in one view.

Authenticated Depth

Credentialed scans log into hosts for missing-patch detection, insecure configuration, and CIS and NIST benchmark checks an outside view cannot see.

CVSS + EPSS Prioritization

Every finding scored by severity, real-world exploit probability, and reachability, so the top of your queue is genuinely the thing to fix first.

Known CVEs in Services & Software

Every fingerprinted version matched to 100,000+ CVEs, including Log4Shell, BlueKeep, EternalBlue, and CitrixBleed across Microsoft, Cisco, Citrix, and Atlassian.

Outdated & End-of-Life Services

Flags services running unsupported software versions, a latent exposure even before a CVE is published, because unmaintained software is where the next one lands.

CVSS + EPSS Prioritization

Every finding scored by severity, real-world exploit probability, and reachability, so the top of your queue is genuinely the thing to fix first.

Security Misconfigurations

Exposed databases, open management ports, unnecessary services, directory listing, and misconfigured firewalls that quietly widen your attack surface.

SSL/TLS & Encryption

Expiring or misconfigured certificates, weak cipher suites, and deprecated protocols like SSLv3 and early TLS that break both security and compliance.

Cloud & Container Hosts

Extends the same scanning to cloud instances and containerized workloads across AWS, Azure, and GCP, so hybrid infrastructure is covered in one view.

Weak & Default Credentials

Tests discovered services for default and weak credentials, so the switch on admin/admin or the database with a blank password surfaces before an intruder finds it.

Network Devices

Scans routers, switches, and firewalls that agent-only scanners cannot reach, where a single default credential can open an entire network segment.

Authenticated Depth

Credentialed scans log into hosts for missing-patch detection, insecure configuration, and CIS and NIST benchmark checks an outside view cannot see.

The network CVEs that breach companies

The vulnerabilities that cause real breaches are rarely exotic. They are unpatched, internet-reachable services with public exploits. ScanTitan detects the classics and the newest disclosures alike.
Vulnerability CVE Affected service Severity
Log4Shell CVE-2021-44228 Apache Log4j (Java services) CVSS 10.0
BlueKeep CVE-2019-0708 Remote Desktop (RDP) CVSS 9.8
EternalBlue MS17-010 Windows SMB CVSS 9.3
CitrixBleed CVE-2023-4966 Citrix NetScaler / ADC CVSS 7.5
ProxyShell CVE-2021-34473 Microsoft Exchange CVSS 9.8
swipe to see all columns

What a ScanTitan network scan report looks like

Built for the engineer who fixes the issue and the manager who reports the risk. Exportable as PDF, JSON, and HTML.
Host and service inventory

Every live host, open port, and identified service with its version across the scanned ranges.

Per-finding CVE detail

CVE ID, CVSS score, EPSS probability, and confirmed-exploitable status.

Evidence panel

Request and response for each confirmed finding, reproducible by your team or auditor.

Ranked risk queue

Findings ordered by real-world risk so remediation starts where it matters most.

Plain-language remediation

A specific fix per finding, followed by a one-click re-scan that verifies closure.

Compliance export

Mapped to PCI DSS 11.3, ISO 27001, SOC 2, and HIPAA, formatted for auditors.

Network Scan - 10.0.2.0/24
2 Critical 4 High 6 Medium
SMB exposed to EternalBlue
CVSS 9.3
10.0.2.14:445 · Windows Server 2016 · MS17-010
SMB negotiate · 10.0.2.14:445
Response: vulnerable SMBv1 confirmed
EPSS 0.91 · public exploit available
Default credentials on switch
CVSS 8.8
10.0.2.1 · management panel · admin/admin
GET /login · auth admin:admin
HTTP/1.1 200 OK ← authenticated to device
What a ScanTitan network scan report looks like

A simpler Nessus and OpenVAS alternative

OpenVAS is free but demands setup and maintenance most SMBs cannot staff. Nessus is deep but starts in the thousands per year. ScanTitan runs from the cloud with confirmed findings and prioritization built in, and an API to automate it all.

 
Bash - Scan an IP range via API
# Scan an internal range, authenticated
curl -X POST https://api.scantitan.com/v1/net-scans \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "targets": "10.0.2.0/24",
    "scan_type": "authenticated",
    "ports": "top-1000",
    "notify": ["slack","jira"]
  }'

# Response
{
  "scan_id": "net_6d2f9a",
  "status": "queued",
  "hosts": 254
}
YAML - Scheduled quarterly PCI scan
- schedule: quarterly
  scope: external_ips
  profile: pci_dss_11_3
  alert_on: new_cve,critical,high

No install. No tuning. No analyst required.

Cloud-based external scanning and a lightweight connector for internal ranges. Findings flow into the tools you already use.

Cloud-based

No install to scan externally

Scheduling

Quarterly PCI, monthly hygiene

Slack

Critical finding alerts

Jira

Auto-create tickets

Internal connector

Reaches behind the firewall

SIEM

Export findings

Cloud accounts

AWS, Azure, GCP hosts

REST API

Trigger + pull results

Webhooks

Any tool via JSON

What teams achieve with ScanTitan

Real outcomes from real scans. Numbers are placeholders, replace with verified client data before publishing.

Latest network scanner updates

ScanTitan ships detection and engine improvements on a rolling basis. This page is updated every 90 days.

July 2026

EPSS-weighted prioritization

Network findings are now ranked by the Exploit Prediction Scoring System alongside CVSS and reachability, so an exploitable internet-facing service outranks a high-CVSS bug on an unreachable host.

May 2026

Network device scanning

Expanded credentialed checks for routers, switches, and firewalls, including default-credential detection on management interfaces that agent-only scanners cannot reach.

March 2026

Emerging-threat re-scan

When a major new network CVE is disclosed, ScanTitan automatically re-checks your hosts against it, so you learn you are exposed before the exploit is weaponized.

January 2026

Confirmed-finding evidence panel

Every confirmed finding now attaches the full request and response that validated it, reproducible by your team or auditor for dispute-proof reporting.

ScanTitan vs Nessus, Rapid7 InsightVM, Intruder, and OpenVAS

All five scan networks for vulnerabilities. The difference is setup, evidence, prioritization, and who the tool is built for.
ScanTitan Nessus Rapid7 InsightVM Intruder OpenVAS
Internal + external scanning Split
Scans routers, switches, firewalls
Confirmed findings with proof Partial Partial Partial
EPSS + exploitability prioritization Partial
No install, cloud-based Partial
Plain-language fix + re-scan Partial
Built for lean teams Analyst-heavy Enterprise DIY
Entry point Free scan ~$4,790/yr Enterprise quote Paid tiers Free (self-host)

What security teams say

4.8

G2 · placeholder

4.9

Capterra · placeholder

"The first internal scan found an EternalBlue-vulnerable server we did not know was still online. Our old agent-based scanner never touched the switches or printers. ScanTitan found the default creds on both."

Adam K. IT Manager · retail chain

"We ran OpenVAS for years and drowned in findings. ScanTitan gives us a confirmed, ranked list instead of a raw dump, and there is nothing to maintain. It is the Nessus depth without the Nessus bill."

Nadia F. Head of Security · SaaS

"Quarterly PCI external scans used to be a fire drill. Now they run on a schedule and the audit export is one click. Every finding has the evidence our QSA needs."

Ravi B. Compliance Lead · fintech

Common questions about network vulnerability scanning

Answered by our security team, not by a chatbot.
A network vulnerability scanner is an automated tool that inspects the hosts on a network, servers, workstations, routers, printers, cloud instances, for known security weaknesses. It discovers live systems across your IP ranges, identifies the open ports and the service and version behind each one, then cross-references those versions against a CVE database to report which carry known, exploitable flaws. It also flags misconfigurations, weak or default credentials, and exposed services on the perimeter and inside the network.
Define the IP ranges or hosts you want to test and run a scan. ScanTitan discovers the live hosts, enumerates open ports, fingerprints each service, and matches every version against 100,000+ CVEs, all from the cloud with no software to install for external scanning. For internal scanning, a lightweight connector reaches hosts behind your firewall, including network devices. Provide credentials for a deeper authenticated scan. ScanTitan confirms exploitable findings with evidence, prioritizes them by CVSS and EPSS, and gives a plain-language fix.
External scanning assesses your internet-facing IP addresses the way a remote attacker sees them, finding exposed services, missing patches, and weak encryption on your perimeter. Internal scanning tests hosts behind the firewall, the systems reachable only after someone is already inside through a phished device or stolen credential. External scanning is what PCI DSS Requirement 11.3 mandates quarterly, while internal scanning catches the lateral-movement paths and default credentials that turn a small foothold into a full breach. ScanTitan runs both from one platform.
An unauthenticated scan tests a host from the outside with no credentials, seeing what any attacker on the network would see: open ports, service versions, and exposed issues. An authenticated, or credentialed, scan logs into the host with credentials you provide and inspects it from the inside, finding missing patches, insecure configuration, and compliance gaps against CIS and NIST benchmarks that an outside view cannot detect. Authenticated scans are more thorough and produce fewer false positives, so ScanTitan supports them where depth matters.
Yes, for teams that want the coverage without the overhead. OpenVAS is free but demands setup, tuning, and ongoing maintenance, and it gives you raw findings with no prioritization. Nessus is deep and accurate but starts in the thousands of dollars per year and assumes a full-time analyst to triage its output. ScanTitan runs from the cloud with no install, confirms findings with evidence instead of dumping raw results, prioritizes by CVSS and EPSS out of the box, and explains each fix in plain language. If you have outgrown a DIY OpenVAS setup but do not need an enterprise Nessus deployment, ScanTitan is built for exactly that middle.
Continuously, or at minimum quarterly for compliance and monthly for hygiene. New CVEs are disclosed at 65 or more per day, so a scan is a snapshot that ages quickly, and a host that was clean last month can be exploitable today because a vulnerability was published in software it runs. PCI DSS requires external scans at least quarterly and after significant changes, but that is a floor, not a target. ScanTitan supports scheduled scanning and emerging-threat checks that re-test your hosts automatically when a major new CVE lands.
ScanTitan is built to be non-destructive. It confirms that a vulnerable service or configuration exists without exploiting it, so it does not modify data or take systems down. Deeper, more aggressive scans that enumerate many ports and services generate more traffic, which is why ScanTitan rate-limits them and lets you schedule scans during off-peak windows. Aggressive enumeration can trigger intrusion-detection alerts, which is expected, so notify your team or SOC before a scheduled deep scan. A lighter unauthenticated scan gives broad coverage with minimal footprint.
Yes. ScanTitan scans cloud instances and containerized workloads across AWS, Azure, and GCP alongside your on-premise hosts, so a hybrid environment is covered in one view rather than split across separate tools. External scanning reaches your public cloud IPs with no install, and the internal connector or cloud-account integration extends coverage to private subnets and virtual networks. Findings from cloud and on-prem hosts land in the same ranked queue, scored the same way, so you prioritize across the whole estate instead of one segment at a time.

Is ScanTitan's network scanner right for you?

We would rather tell you now than after you have signed up.

Your network has open doors. Find them before attackers do.

ScanTitan scans your internal and external IP ranges for CVEs, misconfigurations, weak credentials, and exposed services, confirms every finding with evidence, and ranks them by real-world risk so you fix the exploitable few first.

OSCP · CISSP · 12 years in web application security · Author profile →