CVE-2025-54490

A stack-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). A specially crafted MFER file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.This vulnerability manifests on line 9090 of biosig.c on the current master branch (35a819fa), when the Tag is 64: else if (tag==64) //0x40 { // preamble char tmp[256]; // [1] curPos += ifread(tmp,1,len,hdr); In this case, the overflowed buffer is the newly-declared `tmp` \[1\] instead of `buf`. While `tmp` is larger than `buf`, having a size of 256 bytes, a stack overflow can still occur in cases where `len` is encoded using multiple octets and is greater than 256.

• CWE-121

• https://talosintelligence.com/vulnerability_reports/TALOS-2025-2234Exploit, Third Party Advisory
• https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2234

Published

Aug 25, 2025

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2025-54485A stack-based buffer overflow vulnerability exists in the MF…9.8
• CVE-2025-54486A stack-based buffer overflow vulnerability exists in the MF…9.8
• CVE-2025-54487A stack-based buffer overflow vulnerability exists in the MF…9.8
• CVE-2025-54488A stack-based buffer overflow vulnerability exists in the MF…9.8
• CVE-2025-54489A stack-based buffer overflow vulnerability exists in the MF…9.8
• CVE-2025-5449A flaw was found in the SFTP server message decoding logic o…6.5
• CVE-2025-54491A stack-based buffer overflow vulnerability exists in the MF…9.8
• CVE-2025-54492A stack-based buffer overflow vulnerability exists in the MF…9.8
• CVE-2025-54493A stack-based buffer overflow vulnerability exists in the MF…9.8
• CVE-2025-54494A stack-based buffer overflow vulnerability exists in the MF…9.8
• CVE-2025-54495A reflected cross-site scripting (xss) vulnerability exists …5.4
• CVE-2025-54496A maliciously crafted project file may cause a heap-based bu…8.4