N
Nessus
tenable.com · Nessus Vulnerability Scanner · scored Jan 2026Nessus scans unlimited IPs, Pro lacks central dashboards.
Best forSecurity consultants needing portable, industry-standard vulnerability assessments.
Vulnerability scanner with 210,000+ plugins and a 0.32-per-million false positive rate for security teams.
Starting price
Upside
- Unlimited IP scanning on Professional tier
- Lowest false positive rate in the industry
- 210,000+ plugins, 88,000+ CVEs covered
Catch
- No centralized management in Pro version
- Reports are static, not dynamic dashboards
- Expert tier costs significantly more
Editor's takeNessus ranks first among 9 tools in this category at 9.1 overall. Its plugin depth and 0.32-per-million false positive rate keep it the reference standard for vulnerability scanning. The Professional tier's lack of centralized dashboards is the clearest gap versus newer cloud-native competitors.
How many vulnerabilities can Nessus detect?
Nessus covers over 88,000 CVEs using more than 210,000 auto-updating plugins, giving it some of the deepest coverage in the vulnerability scanning market.
Does Nessus Professional support unlimited IP scanning?
Yes. Unlike many competitors that charge per asset, Nessus Professional allows unlimited scans across an unrestricted number of IPs.
The evidence: 6 criteria, 3 penalties (−0.17 points)
Score adjustments−0.17 points in total











