CISSP Passing Score: What a 700 on a 1000-Point Scale Really Means

The CISSP Passing Score: 700 Out of 1000

The Certified Information Systems Security Professional (CISSP) exam, administered by ISC2, is widely regarded as one of the most challenging and prestigious certifications in cybersecurity. One of the most common questions aspiring CISSPs ask is: “What is the passing score?” The answer is a scaled score of 700 out of 1000. It’s not a percentage, and it doesn’t mean you need to answer 70% of questions correctly. Understanding the scoring system is crucial to your study strategy and your confidence on exam day.

How Scaled Scoring Works

ISC2 uses a scaled scoring system, not a raw percentage. Instead, ISC2 converts your raw score (number of correct answers) into a scaled score ranging from 100 to 1000. The passing threshold is set at 700. The scaling process ensures fairness across different exam forms, which may vary slightly in difficulty. If one version of the exam happens to be harder than another, the scaling adjusts the raw score needed to achieve a 700, so that the difficulty level is consistent across all test-takers. If you're preparing for this exam, CompTIA Security+ Passing Score: The 750 Number Explained is essential reading.

Why Not a Percentage?

If the exam had 100 questions, a 700 would intuitively mean 70% correct. But the CISSP exam is not a fixed-length test. It is a Computerized Adaptive Test (CAT) for the multiple-choice portion, with a variable number of questions (between 100 and 150) and a maximum of 3 hours. The CAT adapts the difficulty of questions based on your performance. If you answer correctly, the next question may be harder; if you answer incorrectly, it may be easier. Your final score is based on the difficulty and number of questions answered correctly, not just the count. This is why a simple percentage calculation is meaningless.

How Many Questions Can You Miss?

This is the million-dollar question. Because of the adaptive nature and scaling, there is no fixed number of questions you can miss and still pass. The score depends on the difficulty of the questions you answer. For example, missing more easy questions will hurt your score more than missing hard ones. However, we can make some educated estimates. ISC2 does not publish the exact raw score needed. Some candidates report passing with only 100 questions (the minimum), which suggests they were answering consistently correctly and the system had enough confidence to pass them early. Others go to 150 questions and pass, while some hit 150 and fail. The key takeaway: don’t aim for a specific number of misses; aim to demonstrate consistent knowledge across all domains. Want to go further? CEH Passing Score: Understanding the Pearson VUE Scaled Score is a good next step.

Strategic Implications: Where to Bank Safe Marks

The CISSP exam covers eight domains, each with a different weight in the exam. Knowing these weights helps you prioritize your study time and “bank” safe marks in high-weight areas. The domains and their approximate weights are:

To maximize your chances of reaching 700, focus on the heavier domains: Security and Risk Management (15%) is the largest, so mastering it gives you a solid foundation. The other domains are roughly equal, but even a small edge in each can add up. Here’s a strategic approach:

• Master the core concepts in Security and Risk Management, including risk assessment, security governance, and compliance. These questions are often more straightforward and can be “banked” with confidence.
• Understand the fundamentals of the other domains, especially IAM, network security, and security operations, as they appear frequently.
• Don’t neglect Software Development Security even though it’s only 10% — every point counts.

A Simple Worked Example

Let’s illustrate with a simplified example. Suppose the exam has 150 questions (the maximum). If you answer 105 correctly and 45 incorrectly, your raw percentage is 70%. But your scaled score might be exactly 700 or could be higher or lower depending on the difficulty of the questions you got right and wrong. If you answered more easy questions correctly and missed hard ones, your scaled score might be higher than 700. Conversely, if you missed many easy questions but got hard ones right, your score could be lower. In reality, the algorithm is complex, but the takeaway is: consistency matters more than hitting a specific number. If you consistently answer questions correctly across all difficulty levels, you’ll likely pass. This connects to what we discuss in CISM Passing Score: The ISACA 450/800 Threshold Unpacked.

Planning Your Study Strategy

To reach that 700, you need a solid study plan. Here are some actionable tips:

• Take practice exams to get a feel for the question style and timing. Many practice tests provide a scaled score, so use them to gauge your readiness.
• Focus on your weak domains by reviewing the exam outline and spending extra time on areas where you score lower.
• Understand the “best answer” mentality. CISSP questions often have multiple correct answers, but you must choose the best one. This requires deep understanding, not just memorization.
• Manage your time — with up to 150 questions in 3 hours, you have about 1.2 minutes per question. Don’t dwell on tough ones; mark and move on.

Remember, the passing score of 700 is a scaled score, not a percentage. Your goal is to demonstrate consistent knowledge across all domains. By prioritizing the high-weight domains and practicing effectively, you can walk into the exam with confidence.

A free CISSP study plan can give you a schedule that focuses your effort on those high-weight domains.

The fastest way to find blind spots in your preparation is to take ISC2 Certified Information Systems Security Professional (CISSP) exam simulations.

A free CISSP readiness check gives you a short set of practice questions and highlights the topic that needs the most review.