https://www.secdev.uk/blog/tags/nuanced-vulnerabilities/ Recent content in Nuanced Vulnerabilities on guy@secdev.uk Hugo en-gb Guy Dixon | guy@secdev.uk Sat, 06 Dec 2025 00:00:00 +0000 https://www.secdev.uk/blog/technology/2025-12-06-the-art-of-the-subtle-bug/ Sat, 06 Dec 2025 00:00:00 +0000 https://www.secdev.uk/blog/technology/2025-12-06-the-art-of-the-subtle-bug/ <p>The vulnerabilities that cause real breaches are rarely the textbook examples. They&rsquo;re the ones that survive multiple rounds of code review, pass SAST scans, and sit in production for years. The more I researched these nuanced bugs, the more I realised what makes them dangerous: they exploit assumptions reviewers make about language behaviour, framework internals, or data flow boundaries. This post dissects the patterns that make a vulnerability subtle and walks through real examples that show why even experienced reviewers still miss them.</p>