- Why There Is No Published Pass Rate Yet
- What the Exam Design Does Tell Us
- The 80% Threshold in Practice
- Where Candidates Are Most Likely to Lose Points
- The Complimentary Retake and What It Changes
- Who Is Likely to Attempt This Exam
- A Domain-Weighted Readiness Plan
- How to Evaluate Any Pass Rate Claim You See
- Frequently Asked Questions
- CertNexus has not published a verified pass rate for CSD-110, which launched May 11, 2026, so any specific percentage you see is unsupported.
- The exam has 25 questions and requires 80% (20 of 25) to pass, leaving room for only five misses.
- Develop Secure Code carries 33% of the blueprint, making it the domain where your score is most likely decided.
- One complimentary retake is included, which lowers the cost of a first-attempt miss.
Why There Is No Published Pass Rate Yet
If you searched for the CSSD pass rate hoping for a clean percentage, here is the honest answer: there isn't a verified one. The Cyber Secure Software Developer exam, CSD-110, launched on May 11, 2026, and the sources for this article were last checked on October 5, 2026. CertNexus, the issuing body, has not released an official first-time pass rate for this exam in the materials we reviewed.
That matters because a number of sites will happily print a pass rate for almost any certification. For a credential this new, a precise figure would have to be invented or borrowed from a different exam. Neither is acceptable. This article takes a different approach: it explains what the exam's structure and blueprint tell you about difficulty, so you can judge your own odds without relying on a made-up statistic.
What the Exam Design Does Tell Us
Even without a pass-rate statistic, the published exam parameters give you a concrete picture of what you are up against. These are the facts that shape how hard it is to pass:
| Exam Feature | CSD-110 Detail | What It Implies |
|---|---|---|
| Question count | 25 multiple-choice and multiple-response | Short exam; each question carries 4% of your score |
| Passing score | 80% (20 of 25) | Maximum of five incorrect answers |
| Estimated completion time | 30 to 60 minutes (not a verified fixed timer) | Pacing is rarely the main problem; accuracy is |
| Delivery | Online through CHOICE | Taken remotely with the course access key process |
| Retake | One complimentary retake | A built-in second chance |
| Prerequisites | None formally required | Open entry, so preparation levels vary widely |
Two of these features pull in opposite directions. The short length and open access suggest the exam is approachable. The 80% cut score and the multiple-response format suggest it is unforgiving of gaps. We will unpack both below.
The 80% Threshold in Practice
The passing score is 20 correct answers out of 25. In a 25-question exam, that arithmetic is blunt: five wrong answers is the ceiling. There is no cushion from a large question pool smoothing out a bad run on one topic.
Why multiple-response questions raise the stakes
The assessment mixes multiple-choice and multiple-response items. Multiple-response questions ask you to select every correct option, which means partial understanding is a liability. If you know that input validation is important but cannot distinguish it from output encoding as a defense against specific injection patterns, you may select one right answer and miss the other. On a 25-question exam, a handful of those misses is enough to end an attempt.
What a miss costs you
Because each question is worth 4% of the total, a single gap in a high-weight domain can be the difference between 80% and 76%. For the exact scoring rules and how the threshold works, read CSSD Passing Score 2026: Exactly What You Need to Pass.
Where Candidates Are Most Likely to Lose Points
The official CSD-110 blueprint (version 1.12, issued December 15, 2024 and modified June 1, 2026) assigns weights to five domains. Weight is the best available proxy for where your score will be won or lost, since heavier domains contribute more questions.
| Domain | Weight |
|---|---|
| Domain 1: Understand the Fundamentals of Secure Software Development | 15% |
| Domain 2: Explain the Secure Software Development Lifecycle | 22% |
| Domain 3: Develop Secure Code | 33% |
| Domain 4: Defending Against Cyberattacks | 15% |
| Domain 5: Engage in Governance, Risk Management, and Compliance | 15% |
Domain 3: Develop Secure Code (33%)
This is the largest slice of the exam and the place where weak preparation shows up fastest. A candidate who is shaky here cannot realistically make it up elsewhere with only five misses allowed.
- Input validation and output encoding, and when each applies
- Authentication and authorization patterns
- Secrets management and avoiding hard-coded credentials
- Reviewing AI-generated code for security flaws
Domain 2: Explain the Secure Software Development Lifecycle (22%)
The second-heaviest domain rewards candidates who understand how security fits into each phase rather than treating it as a final checkpoint.
- Threat modeling and abuse cases
- SAST, DAST, IAST, and SCA testing approaches
- Secure CI/CD pipelines
- Dependency security and software supply chain security
Domains 1, 4, and 5 (15% each)
Together these make up 45% of the exam, which is too much to neglect. Domain 1 covers foundations such as CIA, AAA, and least privilege. Domain 4 addresses defending against cyberattacks. Domain 5 covers governance, risk management, and compliance, a topic area developers often under-prepare because it feels less hands-on.
The blueprint also states that its detailed examples are not an exhaustive list of everything that may be tested. Treat the listed topics as a floor for your preparation. For a full walk-through of each content area, see CSSD Exam Domains 2026: Complete Guide to All 5 Content Areas.
The Complimentary Retake and What It Changes
The CSD-110 includes one complimentary retake. This detail directly affects how you should interpret any pass-rate discussion. A first-attempt pass rate and an eventual-certification rate are different things, and a free retake pushes the eventual figure above the first-attempt one.
It also changes your risk calculation. A miss on the first attempt is a setback, not a financial penalty, which makes it reasonable to attempt the exam once you are consistently scoring near the threshold rather than waiting for perfect confidence. That said, using the retake well means diagnosing which domain cost you points. Do not simply re-read everything.
Key Takeaway
Treat the free retake as a diagnostic safety net, not a plan. Go in aiming to pass the first time, and if you miss, map your weak areas to the five domain weights before you sit again. For the cost side of this decision, see CSSD Certification Cost 2026: Complete Pricing Breakdown.
Who Is Likely to Attempt This Exam
There are no formal registration prerequisites, application fee, supporting documentation, or eligibility verification. CertNexus recommends foundational security knowledge and experience across software development, design, testing, and deployment, without prescribing a programming language. The course access key includes the CHOICE credential process.
This open-door policy shapes the candidate pool in ways that would influence any future pass-rate figure:
- Experienced developers who already write production code and want to formalize their security knowledge.
- Security-adjacent practitioners who understand threats but have less hands-on coding judgment.
- Early-career candidates using the credential to demonstrate secure-development awareness.
- Teams sponsored by employers who attempt the exam as part of a training program.
Because the barrier to entry is low, the range of preparation among test takers is wide. A pass rate for this population would partly reflect who chose to sit the exam rather than how hard the questions are. That is one more reason a single headline number would be a poor guide to your own odds. If you are weighing your eligibility, see CSSD Requirements 2026: Eligibility, Prerequisites & How to Qualify.
A Domain-Weighted Readiness Plan
Instead of a generic schedule, sequence your preparation around the blueprint weights. The goal is to spend the most time where the most points live, while leaving room to revisit the lighter domains before exam day.
Foundations and Governance (Domains 1 and 5)
- Lock in CIA, AAA, and least privilege so later material builds on them
- Cover governance, risk management, and compliance concepts early, while they feel least intuitive
Secure Code Core (Domain 3)
- Drill input validation versus output encoding until you can separate them instantly
- Practice authentication, authorization, and secrets management scenarios
- Review AI-generated code for flaws, since it is a named topic area
Lifecycle and Defense (Domains 2 and 4)
- Walk through threat modeling and abuse cases
- Compare SAST, DAST, IAST, and SCA by when and what each finds
- Study secure CI/CD and software supply chain security
Timed Mixed Practice
- Take full 25-question practice sets and track misses by domain
- Revisit any domain where you drop below the 80% line
For a fuller framework, see the CSSD Study Guide 2026: How to Pass on Your First Attempt, and keep the CSSD Cheat Sheet 2026: One-Page Review of Must-Know Facts handy for last-minute review. Realistic practice questions are available on the CSSD practice test site.
How to Evaluate Any Pass Rate Claim You See
Since search results for exam pass rates are often unreliable, apply a few filters before trusting any number tied to this credential:
- Check the source. A figure should trace back to CertNexus or a verifiable disclosure, not an anonymous aggregator.
- Check the exam. Make sure it refers to Cyber Secure Software Developer, exam CSD-110, and not another credential that shares the acronym or an older exam such as Cyber Secure Coder CSC-210. The CSD-110 courseware replaces CSC-210 courseware, but the exams and blueprints are distinct.
- Check the date. The exam launched May 11, 2026. Any figure that predates this cannot describe CSD-110.
- Check the definition. Is it a first-attempt rate, an overall rate, or a rate including retakes? Without a definition, the number means little.
If you want a qualitative read on difficulty rather than a statistic, How Hard Is the CSSD Exam? Complete Difficulty Guide 2026 goes deeper on what makes the questions challenging. And if you are deciding whether the effort is worthwhile, Is the CSSD Certification Worth It? Complete ROI Analysis 2026 frames the return.
Frequently Asked Questions
No verified pass rate for the Cyber Secure Software Developer exam (CSD-110) has been published in the sources reviewed. The exam launched May 11, 2026, and any specific percentage you see should be treated as unsupported unless it traces back to CertNexus.
You need 80%, which is 20 correct answers out of 25 questions. That means you can miss no more than five questions and still pass.
Yes. One complimentary retake is included. Use your first attempt to identify weak domains, then focus your retake preparation on those areas, especially the heavily weighted Develop Secure Code domain at 33%.
The lack of formal prerequisites means anyone can register, but CertNexus recommends foundational security knowledge and experience in development, design, testing, and deployment. The 80% passing score and multiple-response questions make careless preparation risky.
Develop Secure Code (33%) deserves the most time, followed by the secure software development lifecycle (22%). The other three domains are 15% each and still matter because only five misses are allowed overall.
In short, the most useful number is not a pass rate but your own consistency across the five domains. If you can score at or above 80% on mixed practice sets while holding up on the heavily weighted secure-coding material, you are preparing the way the blueprint rewards. When you are ready to test that, start with the CSSD practice tests.