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Microsoft Defender Vulnerability Management vs Nucleus Security comparison

 

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

Microsoft Defender Vulnerab...
Ranking in Vulnerability Management
13th
Ranking in Risk-Based Vulnerability Management
6th
Average Rating
8.2
Reviews Sentiment
6.5
Number of Reviews
17
Ranking in other categories
Advanced Threat Protection (ATP) (17th), Microsoft Security Suite (18th)
Nucleus Security
Ranking in Vulnerability Management
41st
Ranking in Risk-Based Vulnerability Management
14th
Average Rating
7.6
Reviews Sentiment
6.9
Number of Reviews
2
Ranking in other categories
Application Security Tools (26th), Continuous Threat Exposure Management (CTEM) (13th)
 

Mindshare comparison

As of April 2026, in the Risk-Based Vulnerability Management category, the mindshare of Microsoft Defender Vulnerability Management is 5.7%, down from 8.7% compared to the previous year. The mindshare of Nucleus Security is 3.0%, up from 2.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Risk-Based Vulnerability Management Mindshare Distribution
ProductMindshare (%)
Microsoft Defender Vulnerability Management5.7%
Nucleus Security3.0%
Other91.3%
Risk-Based Vulnerability Management
 

Featured Reviews

OB
Microsoft Solutions Manager at Self-Employed
Ensures strong threat and vulnerability management with continuous risk assessment
The major priority is identity, which is crucial; we have lots of companies in manufacturing, energy, or various sectors, and it varies from one to another. I assess Microsoft Defender Vulnerability Management as very effective in continuously assessing vulnerabilities without requiring scans. We use automatic investigation and remediation features, safe attachments, safe links, and real-time reports, which are also very effective. For Active Directory, Defender has threat intelligence, and we are using that. The risk-based prioritization within Vulnerability Management affects my ability to manage vulnerabilities, particularly in relation to the Zero Trust Model utilized by our customers. The end-users often do as they please in their systems.
BJ
Technical Director at Entrust Software Development India
Centralized security testing has improved vulnerability remediation and compliance reporting
I recommend more enhancements focusing on penetration testing for both SSL over HTTP and non-SSL over HTTP, specifically targeting the RCP Rich Client Platform and Equinox frameworks that allow on-premises desktop applications to be tested simultaneously. I believe those would significantly improve the tool in the future. I choose eight as my rating primarily because of the installer app; it becomes challenging to identify the actual vulnerabilities. Once we build this installer—rather than just working on the codebase—sometimes, we face gaps considering the build parameters and conversions to the installer. Identifying those gaps is an area that could use improvement after the installer or desktop application testing, which would be beneficial. That is the only reason; otherwise, I could easily rate it a ten out of ten given its smooth operational process.

Quotes from Members

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

Pros

"The product's stability is very high...The scalability of the product is amazing."
"The solution is highly scalable."
"A valuable feature is the ease of management and integration with Microsoft products."
"The most valuable aspect is the kind of assessment results I get, and the recommendations provided in Microsoft products really help in taking care of the resources."
"Microsoft Defender Vulnerability Management is versatile and assesses vulnerabilities, providing detailed information on CVEs, their categories, and exploit statuses."
"The solution is up-to-date and helps prevent zero-day attacks."
"Overall, I would rate Microsoft Defender Vulnerability Management a nine out of ten."
"One valuable feature is the Microsoft Security Scorecard."
"We have seen clear compliance and risk control outcomes more than other operational metrics, including fewer process gaps during documentation and safety checks, strong consistency in following protocols for handling, traceability, and staff awareness, better audit readiness, a lower chance of procedure errors, and faster escalation when something appears out of standard, which is very important for us in the healthcare sector."
"I think the best features that Nucleus Security offers are purely the faster remediation to dev tools, which is crucial for managing, prioritizing, and fixing vulnerabilities while helping operational pipelines run these vulnerability management tools."
 

Cons

"Integration can be improved."
"The setup phase of the product is not that easy and needs a person to have a certain level of expertise."
"Probably my only criticism would be the cost. It is expensive."
"We have experienced some logging issues, including a few hours of downtime initially. Despite this, I would rate the overall stability as an eight."
"The automated remediations can be more specific."
"They may need to improve the portal refresh rate for Microsoft Defender Vulnerability Management because it takes time for recommendations to disappear after mitigation; sometimes, it takes one week, when it should ideally take only one to two hours."
"The constant changes in the product configuration or the console setup can sometimes be challenging."
"When I create rules, it gave me problems and I did not know where the problem was located."
"I choose eight as my rating primarily because of the installer app; it becomes challenging to identify the actual vulnerabilities."
"Protocols can be too complex in practice sometimes, and some processes can feel heavy and disconnected from our daily workflow."
 

Pricing and Cost Advice

"The licensing costs are reasonable."
"I rate the product's price a three on a scale of one to ten, where one is a low price, and ten is a high price."
"The product’s pricing is medium."
"The licensing model follows a per-user per-month structure."
"The tool is a bit costly."
Information not available
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Top Industries

By visitors reading reviews
Financial Services Firm
12%
Computer Software Company
8%
Manufacturing Company
8%
Government
7%
Computer Software Company
16%
Financial Services Firm
11%
Comms Service Provider
7%
Healthcare Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise2
Large Enterprise6
No data available
 

Questions from the Community

What needs improvement with Microsoft Defender Vulnerability Management?
When I create rules, it gave me problems and I did not know where the problem was located. A small pop-up notification indicating how a rule should be configured would be helpful, rather than the p...
What is your primary use case for Microsoft Defender Vulnerability Management?
I do not use Microsoft Defender Vulnerability Management at work. However, I am currently not working, but I do use Microsoft Defender Vulnerability Management on my personal computer.
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?
I think it can be improved by making it more practical, integrated, and easier for teams to apply in real-world workflow from a healthcare perspective. The main improvements I can see right now are...
What is your primary use case for Nucleus Security?
I have been using Nucleus Security for the past few years in my company, particularly in the healthcare field.I use Nucleus Security especially for understanding radiation safety, nuclear medicine,...
 

Overview

Find out what your peers are saying about Qualys, Tenable, Horizon3.ai and others in Risk-Based Vulnerability Management. Updated: March 2026.
886,426 professionals have used our research since 2012.