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Nucleus Security vs Vicarius vRx comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Feb 23, 2026

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Qualys TotalCloud
Sponsored
Ranking in Vulnerability Management
11th
Average Rating
8.6
Reviews Sentiment
7.2
Number of Reviews
39
Ranking in other categories
Container Security (11th), Cloud Workload Protection Platforms (CWPP) (7th), Cloud Security Posture Management (CSPM) (8th), SaaS Security Posture Management (SSPM) (1st), Cloud-Native Application Protection Platforms (CNAPP) (6th)
Nucleus Security
Ranking in Vulnerability Management
40th
Average Rating
8.0
Reviews Sentiment
7.3
Number of Reviews
2
Ranking in other categories
Application Security Tools (28th), Risk-Based Vulnerability Management (14th), Continuous Threat Exposure Management (CTEM) (13th)
Vicarius vRx
Ranking in Vulnerability Management
16th
Average Rating
8.0
Reviews Sentiment
7.6
Number of Reviews
21
Ranking in other categories
Patch Management (6th), Risk-Based Vulnerability Management (10th)
 

Mindshare comparison

As of July 2026, in the Vulnerability Management category, the mindshare of Qualys TotalCloud is 1.1%, up from 1.0% compared to the previous year. The mindshare of Nucleus Security is 1.0%, up from 0.8% compared to the previous year. The mindshare of Vicarius vRx is 0.9%, up from 0.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Vulnerability Management Mindshare Distribution
ProductMindshare (%)
Qualys TotalCloud1.1%
Vicarius vRx0.9%
Nucleus Security1.0%
Other97.0%
Vulnerability Management
 

Featured Reviews

RO
IT Security Expert at Alior Bank S.A.
Unified risk scoring has improved our cloud visibility and simplifies remediation priorities
Qualys TotalCloud provides unified vulnerability and threat assessment across both IAS and SaaS. This solution provides a single prioritized view of risk, which helps reduce the work I would have to do. We are no longer based on CVSS; we are based on Qualys risk scoring, which is based on CVSS plus internal findings made by Qualys, and then assigns its own score. The TruRisk insight feature has found a small number of assets with high vulnerability scores, though I am cautious since some information is classified. Qualys TotalCloud has positively impacted our bank's performance, and we have definitely seen benefits after implementing this solution.
VK
manager at a computer software company with 201-500 employees
Unified vulnerability workflows have transformed how our teams prioritize and resolve critical risks
While the platform is incredibly powerful, the initial configuration curve of Nucleus Security can be a bit steep. When first setting up complex, multi-layered automation rules and asset groupings, the interface can feel a little overwhelming. Having more intuitive step-by-step visualized wizards or guided templates for building complex triage workflows would make the onboarding process much smoother for new team members. Dashboard customization and reporting would definitely be on my wish list. While the default dashboards are great for a general overview, it can take a bit of manual tweaking when building highly tailored workspace views for different engineering groups. Having a more flexible drag-and-drop widget system where individual teams can prioritize exactly what metrics they see first on their layout would be a huge quality of life update. On the reporting side, the data it generates is solid, but I would like to see more granular control over formatting within the platform itself. Sometimes leadership wants data tailored in very specific ways, and currently, we occasionally have to export the data and clean it up externally to meet those exact visual preferences.
OrenBen Shalom - PeerSpot reviewer
Information Security Manager at Pango
Consolidates vulnerability discovery, prioritization, and remediation in a single platform
Vicarius vRx offers several advantages, especially for organizations with diverse operating systems and applications requiring frequent patching. The platform helps prioritize patch installation by identifying high-risk vulnerabilities, allowing IT teams to focus on critical threats first. This prioritization is crucial because it prevents IT teams from being overwhelmed by the constant influx of patches, enabling them to create a manageable plan and allocate resources effectively. By distinguishing between critical, high-risk, and medium-risk vulnerabilities, Vicarius vRx empowers IT teams to address the most urgent threats promptly and schedule less critical patches for later. Both native operating system updates and Vicarius vRx offer vulnerability remediation. Native OS updates allow for the patching of system vulnerabilities on Windows, macOS, and Linux. However, Vicarius vRx provides a single solution for installing both operating system and application updates by also discovering application vulnerabilities. Another valuable feature is virtual patching, which allows us to protect an asset from a specific vulnerability without installing a patch. Sometimes, installing a patch alone is insufficient and requires restarting the asset. However, production servers often cannot be restarted during the day, restricting restarts to specific timeslots. Virtual patching creates a network-based protection layer that prevents exploitation of a vulnerability, offering a temporary safeguard. While not a foolproof solution for long-term use, it's a valuable tool that reduces tension between IT and security teams by providing time to properly install patches.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"TotalCloud has been excellent in providing us with immediate access to all the products and features we need, such as CSPM, TruRisk Insights, and compliance reports, including CIS and HIPAA."
"I would rate Qualys TotalCloud ten out of ten."
"I like the web API security and IoT scanning features the most. The user-friendly design of TotalCloud's interface enables customers to navigate it and use its full potential easily"
"Qualys TotalCloud's most valuable features are its security capabilities that help identify and mitigate risk factors."
"TruRisk Insights is the most important innovation they've released this year."
"One of the most valuable features of Qualys TotalCloud is FlexScan, which is specifically for internet-facing VMs. We found this feature to be very useful. It was a key differentiator for us."
"TotalCloud's best feature is the integration of cloud accounts. It helps with the risk and security posture management of our cloud infrastructure."
"Qualys TotalCloud provides a single, prioritized view of risk, reducing the workload associated with consolidating multiple sources for risk prioritization."
"Nucleus Security has fundamentally changed how we manage our vulnerability lifecycle and made our entire incident response process much more proactive, organized, and reliable."
"The best features that Nucleus Security offers in my experience are the unified integrations with all of the different vulnerability management platforms."
"Vicarius vRx's primary strength is its user-friendly interface."
"Agent-based scanning is the most valuable feature."
"The most valuable features of vRx would be virtualized patching and severity prioritization."
"vRx seemed to be user-friendly and very easy to use."
"Vicarius vRx has reduced 70% of the time we spend on patching."
"The prioritization of the vulnerabilities and patches that we must apply immediately is valuable. The automation of the tasks allows us to spend less time in that area."
"While other vulnerability scanners overwhelm us with a huge list of problems after a scan, Vicarius vRx goes beyond that."
"The strongest advantage of Vicarius vRx is its intuitive interface, which requires minimal explanation or support, even for first-time users."
 

Cons

"It is already perfect, but they can bring some newer dashboards and customization options for the dashboard. It would be great to be able to include on-prem assets on the dashboard."
"In a future release, I suggest that zero-day vulnerabilities should be predicted in advance using AI technologies. The system is not 100% secure yet, so proactive threat hunting could be enhanced to be more proactive than the current system."
"With the growing integration of AI, I would like Qualys to enhance its service offerings to better accommodate AI-related risks."
"Qualys TotalCloud needs to improve its accuracy for non-Windows operating systems."
"There is room for improvement in the support."
"We encountered challenges identifying the correct resource category for certain items, such as those in containers or storage."
"The support is not up to the mark and seems to be overburdened."
"There is a lack of data segregation according to criticality or inventory."
"While the platform is incredibly powerful, the initial configuration curve of Nucleus Security can be a bit steep."
"Nucleus Security needs a better view into exposure management, as exposure management and attack path management are missing."
"Based on the request from our clients, it would be great to have an MDM solution. If they can manage vulnerabilities on mobile devices too, that would be great. Having scripting capabilities on mobile devices would be very useful. That was the request we had from lots of clients."
"We had an outage due to a change Vicarius performed in their system."
"I would be happy if the patch update could be downloaded to the Vicarius server and then implemented on the client. Currently, they just send a link to the software."
"Vicarius vRx's application management capabilities could be improved by allowing users to manage and uninstall applications directly within the GUI, eliminating the need for scripting and streamlining the process."
"Areas that need improvement include the CPU usage and the delay between sending updates and receiving feedback on their status."
"I would like to see more network architecture elements with patches."
"The user interface for deploying patches can be improved, as it appears complicated when launching patches. We can launch it for apps or OS, but the steps to get there are a bit tedious. This is the only thing."
"The patchless protection feature is currently difficult to understand and could be made more user-friendly."
 

Pricing and Cost Advice

"Qualys TotalCloud offers good pricing that is affordable and competitive with the market. Our partnership also provides us with additional benefits."
"Qualys TotalCloud is cost-efficient and was selected for its value compared to other products."
"Qualys TotalCloud is expensive, but it offers a premier solution with no headaches."
"The pricing is comparable. It is built into our other product, so I cannot piecemeal it. It is a part of our subscription."
"The cost is high, but it meets our organizational needs."
"Although Qualys TotalCloud is relatively expensive due to its unique automation features, its cost-effectiveness is rated an eight out of ten, with ten being the most costly."
"While Qualys TotalCloud's pricing is currently acceptable, it is becoming increasingly expensive and may soon be considered overpriced."
"I am not sure about the pricing. From what I understand, it is a bit on the higher side, but I do not have the exact numbers."
Information not available
"Vicarius' pricing was reasonable compared to the other systems we evaluated."
"The price of vRx seems fair. None of our clients complained about the pricing. They all thought it was reasonable. Once people understood what it does, it didn't take much to get them to sign up."
"Vicarius vRx's per-asset pricing makes it easy for me to market to clients as it scales with their needs."
"It is in the middle. It is not the cheapest solution, but it is also not terribly expensive. We found it to be a good fit. It is fairly priced."
"Vicarius vRx is reasonably priced."
"I do not use other solutions, so I cannot compare its pricing to others, but its price seems okay."
"I am not sure how much it costs, but it would have saved us some costs."
"From a pricing perspective, Vicarius was cheaper compared to other competitors."
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Top Industries

By visitors reading reviews
Manufacturing Company
16%
Financial Services Firm
13%
Construction Company
8%
Comms Service Provider
7%
Computer Software Company
13%
Financial Services Firm
13%
Construction Company
8%
Manufacturing Company
7%
Computer Software Company
11%
Non Profit
10%
Media Company
9%
Comms Service Provider
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise5
Large Enterprise29
No data available
By reviewers
Company SizeCount
Small Business11
Midsize Enterprise7
Large Enterprise3
 

Questions from the Community

What needs improvement with Qualys TotalCloud?
Areas that need improvement in every solution include the remediation part. The remediation steps should be simple en...
What is your primary use case for Qualys TotalCloud?
Our use case involves the assets that we have under cloud, the assets exposed to the internet, and the internal appli...
What is your experience regarding pricing and costs for Nucleus Security?
I have a good experience with that, so we don't have much problem dealing with pricing, setup, and licensing.
What needs improvement with Nucleus Security?
Nucleus Security needs a better view into exposure management, as exposure management and attack path management are ...
What is your primary use case for Nucleus Security?
My main use case for Nucleus Security is unifying the vulnerability management landscape, providing a single source o...
What is your experience regarding pricing and costs for Vicarius vRx?
I do not use other solutions, so I cannot compare its pricing to others, but its price seems okay.
What needs improvement with Vicarius vRx?
I would be happy if the patch update could be downloaded to the Vicarius server and then implemented on the client. C...
What is your primary use case for Vicarius vRx?
We use Vicarius vRx to manage all third-party software updates. Previously, we could manage Windows updates, but thir...
 

Also Known As

Qualys TotalCloud with FlexScan
No data available
No data available
 

Overview

Find out what your peers are saying about Wiz, Qualys, Tenable and others in Vulnerability Management. Updated: June 2026.
903,933 professionals have used our research since 2012.