CVE-2025-66048 — AI Deep Analysis Summary

🚨 **Essence**: A critical **Stack Buffer Overflow** in `libbiosig`'s MFER parsing function. 💥 **Consequences**: Attackers can trigger **Arbitrary Code Execution** (ACE).…

🛡️ **Root Cause**: **CWE-121: Stack-based Buffer Overflow**. The flaw lies in how the MFER format is parsed. Input data exceeds the allocated stack buffer, corrupting memory and allowing code injection.…

🏢 **Affected**: **The Biosig Project** - **libbiosig**. 📦 **Version**: Specifically **v3.9.1**. Any application integrating this open-source biomedical signal processing library is at risk. 📉 Check your dependencies!

💀 **Attacker Capabilities**: Full **Remote Code Execution**. With CVSS 9.8 (Critical), hackers gain **High Confidentiality, Integrity, and Availability** impact.…

⚡ **Exploitation Threshold**: **LOW**. 🌐 **Network** (AV:N), **Low Complexity** (AC:L), **No Privileges** (PR:N), **No User Interaction** (UI:N). You don’t need to be logged in or trick a user.…

🔍 **Public Exploit**: **No PoC available** in the provided data. However, the CVSS score and Talos Intelligence report suggest high severity.…

🔎 **Self-Check**: Scan for **libbiosig v3.9.1** in your environment. 🧪 Look for applications parsing **MFER format** files.…

🛠️ **Official Fix**: The data does not list a specific patch commit. However, the vulnerability is published (Dec 2025). 🔄 **Action**: Check the official Biosig Project repository for updates > v3.9.1.…

🚧 **No Patch Workaround**: **Input Validation & Sanitization**. 🚫 Reject or strictly validate MFER files before passing them to the parser. 🛑 Implement **WAF** rules to block malformed MFER payloads.…

🔥 **Urgency**: **CRITICAL / IMMEDIATE**. 🚨 CVSS 9.8 is near-maximum. With no auth required and easy exploitation, this is a **Zero-Day risk**. Prioritize patching or mitigation **TODAY**.…