Open-source software is everywhere, but are we overlooking a critical security risk? A new research tool called VULTURE reveals the hidden dangers of unpatched third-party libraries and how they can leave your software vulnerable to attacks. Modern software development relies heavily on reusing pre-built components, especially open-source libraries. This accelerates development, but what happens when these libraries contain security flaws? Often, these vulnerabilities, known as 1-day vulnerabilities, go unnoticed, especially when developers customize these libraries. Existing security tools struggle to detect these hidden threats because they often rely on simple code comparisons that break down when libraries are modified. Researchers have developed VULTURE, a tool that digs deeper. Instead of just comparing code, it analyzes the functionality and the history of code changes, specifically patch commits, within these libraries. This allows VULTURE to identify vulnerabilities even when the code has been tweaked. VULTURE cleverly builds a specialized database of known vulnerable libraries and their patches, tailored to specific platforms like IoT devices. It uses this database to efficiently identify potentially vulnerable libraries used in a project. Then, it performs a dual analysis: comparing versions for exact reuses and conducting a chunk-based analysis for custom reuses. This chunk-based analysis is key. It breaks down the code into meaningful chunks based on functionality, allowing VULTURE to identify vulnerabilities even in heavily modified libraries. Tests on real-world projects show VULTURE's effectiveness. It successfully identified significantly more vulnerabilities than existing tools, including commercial ones. While VULTURE demonstrates a substantial improvement in detecting hidden vulnerabilities, challenges remain. The accuracy of the tool is dependent on the quality of vulnerability databases and the capabilities of the underlying language models used for analysis. Despite these challenges, VULTURE offers a crucial step forward in software supply chain security. By combining sophisticated database construction and intelligent code analysis, it provides developers with a powerful weapon against the hidden threats lurking in their software’s dependencies. The future of software security relies on tools like VULTURE that can intelligently analyze code and its history, providing proactive defense against ever-evolving threats.