Original release date: July 21, 2021
The Homeland Security Systems Engineering and Development Institute, sponsored by the Department of Homeland Security and operated by MITRE, has released the 2021 Common Weakness Enumeration (CWE) Top 25 Most Dangerous Software Weaknesses list. The Top 25 uses data from the National Vulnerability Database (NVD) to compile the most frequent and critical errors that can lead to serious vulnerabilities in software. An attacker can often exploit these vulnerabilities to take control of an affected system, obtain sensitive information, or cause a denial-of-service condition.
CISA encourages users and administrators to review the Top 25 list and evaluate recommended mitigations to determine those most suitable to adopt.