Most cyber compromises don't stem from advanced, cutting-edge techniques. Instead, threat actors frequently leverage exposed and well-known software vulnerabilities. The **CISA Vulnerability Review**, analyzing data from fiscal years 2024 and 2025, highlights that basic security failures are the primary enablers of most successful attacks. The review aims to establish a baseline for the current vulnerability landscape, anticipating a future where AI-enabled vulnerability discovery becomes more prevalent. It strongly advocates for **Secure by Design** principles, urging a shift in cybersecurity efforts from merely reacting to threats to proactively addressing preventable software flaws at their source. ### Common Weaknesses and Prevention The report identifies common software weaknesses that frequently lead to exploitable vulnerabilities. It details practices that software producers can implement to prevent these weaknesses from recurring. By analyzing patterns across vulnerability data, **CISA** encourages organizations to focus on systemic improvements that can eliminate entire classes of vulnerabilities, rather than just patching individual issues as they arise. ### Prioritizing Risk Furthermore, the review guides organizations on how to prioritize vulnerabilities for action, utilizing the framework detailed in **Binding Operational Directive 26-04: *Prioritizing Security Based on Risk***. This framework evaluates vulnerabilities based on four critical criteria: * **Exposure status** * **Known Exploited Vulnerability (KEV) Catalog** status * **Potential for automated exploitation** * **Technical impact** By adopting these principles and prioritization methods, organizations can significantly reduce their risk profile and build more resilient systems.