CVE-2025-66046 — AI Deep Analysis Summary

🚨 **Essence**: A critical **Stack Buffer Overflow** in the MFER parsing function of libbiosig. 💥 **Consequences**: Attackers can trigger **Arbitrary Code Execution** (ACE), leading to full system compromise.…

🛡️ **Root Cause**: **CWE-121** (Stack-based Buffer Overflow). The flaw lies in how the MFER format parser handles input data, failing to validate buffer boundaries before writing.…

🏢 **Affected Vendor**: The Biosig Project. 📦 **Product**: libbiosig. 📅 **Version**: Specifically **v3.9.1**. If you are using this version for biomedical signal analysis, you are at risk.

💀 **Attacker Capabilities**: With **CVSS 3.1 (High)**, hackers gain **Complete Control**. They can read sensitive data (Confidentiality), modify system files (Integrity), and crash services (Availability).…

⚡ **Exploitation Threshold**: **LOW**. The CVSS vector `AV:N/AC:L/PR:N/UI:N` means: Network-accessible, Low Complexity, **No Privileges Required**, and **No User Interaction** needed.…

🔍 **Public Exploit Status**: Currently, **No PoCs** are listed in the provided data. However, the vulnerability is well-documented by Talos Intelligence.…

🔎 **Self-Check**: Scan your environment for **libbiosig v3.9.1**. Look for applications processing **MFER format** files (common in biomedical data).…

🛠️ **Official Fix**: The vulnerability was published on **2025-12-11**. Check the vendor's official repository for an updated version >3.9.1. Apply the patch immediately to close the stack overflow gap.

🚧 **No Patch Workaround**: If you cannot update, **disable MFER parsing** functionality entirely. Implement strict input validation or sandbox the application processing these files.…

🔥 **Urgency**: **CRITICAL**. With a **High CVSS score** and **No Auth/UI required**, this is a prime target for automated scanning.…