The application security landscape has shifted violently. The OWASP Top 10 2025 is not just a shuffle of the 2021 deck; it is a response to the industrialization of cyber-attacks. The era of simple SQL injection being the king is over. We have entered the age of Supply Chain Failures and Systemic Design Flaws.
This guide is your battle-tested cheat sheet. It contains everything you need to know about the new risks, how to spot them (Proof-of-Concept), and how to fix them immediately.
Key Changes in 2025
- New King: Broken Access Control retains the crown.
- New Challengers: Software Supply Chain Failures (A03) and Mishandling of Exceptional Conditions (A10) are the new heavy hitters.
- The Fallen: SSRF is now consolidated into Access Control. Cryptographic Failures dropped to #4.
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