NuytsTech Security

CVE-2025-54482

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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 8751 of biosig.c on the current master branch (35a819fa), when the Tag is 4:

else if (tag==4) {
// SPR
if (len>4) fprintf(stderr,”Warning MFER tag4 incorrect length %i>4n”,len);
curPos += ifread(buf,1,len,hdr);

More information : https://talosintelligence.com/vulnerability_reports/TALOS-2025-2234

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