CVE-2025-54490 — AI Deep Analysis Summary

🚨 **Essence**: A critical stack buffer overflow in **libbiosig**'s MFER parsing function. 💥 **Consequences**: Attackers can execute **arbitrary code** remotely.…

🛡️ **Root Cause**: **CWE-121** (Stack-based Buffer Overflow). The flaw lies in how the library handles input during MFER format parsing, failing to validate buffer boundaries properly.

🏢 **Affected**: **The Biosig Project**'s **libbiosig** library. 📦 **Version**: Specifically **v3.9.0**. Any application relying on this version for biomedical signal analysis is at risk.

💀 **Attacker Capabilities**: Full **Remote Code Execution (RCE)**. With CVSS score indicating High impact on Confidentiality, Integrity, and Availability, hackers can take over the system completely.

⚡ **Exploitation Threshold**: **LOW**. 🌐 **Network**: AV:N (Network exploitable). 🚫 **Auth**: PR:N (No privileges required). 👤 **User**: UI:N (No user interaction needed). It is a remote, unauthenticated attack.

📢 **Public Exploit**: Currently **No PoC** listed in the data. However, the severity (CVSS 9.8) and nature (RCE) make it a high-value target for future wild exploitation. Stay vigilant.

🔍 **Self-Check**: Scan for **libbiosig v3.9.0** in your dependency tree. Look for applications processing **MFER** bio-signal files. Use SAST/DAST tools to detect stack overflow patterns in C/C++ codebases.

🩹 **Official Fix**: The vulnerability was published on **2025-08-25**. Check the vendor's GitHub or official site for an updated version >3.9.0. Apply the patch immediately upon release.

🚧 **No Patch?**: Implement **Input Validation** on MFER file parsers. Use **ASLR** and **Stack Canaries** to mitigate exploitation. Restrict network access to the service processing these files.

🔥 **Urgency**: **CRITICAL**. 🚨 With CVSS 3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, this is a **9.8/10** score. Prioritize patching or mitigation immediately to prevent remote takeover.