Security Vulnerabilities
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 8842 of biosig.c on the current master branch (35a819fa), when the Tag is 12:
else if (tag==12) //0x0C
{
// sampling resolution
if (len>6) fprintf(stderr,"Warning MFER tag12 incorrect length %i>6\n",len);
val32 = 0;
int8_t v8;
curPos += ifread(&UnitCode,1,1,hdr);
curPos += ifread(&v8,1,1,hdr);
curPos += ifread(buf,1,len-2,hdr);
In addition to values of `len` greater than 130 triggering a buffer overflow, a value of `len` smaller than 2 will also trigger a buffer overflow due to an integer underflow when computing `len-2` in this code path.
CVSS Score
9.8
EPSS Score
0.001
Published
2025-08-25
A heap-based buffer overflow vulnerability exists in the Nex parsing functionality of The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). A specially crafted .nex file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.
CVSS Score
9.8
EPSS Score
0.001
Published
2025-08-25
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 8719 of biosig.c on the current master branch (35a819fa), when the Tag is 0:
if (tag==0) {
if (len!=1) fprintf(stderr,"Warning MFER tag0 incorrect length %i!=1\n",len);
curPos += ifread(buf,1,len,hdr);
}
CVSS Score
9.8
EPSS Score
0.001
Published
2025-08-25
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 8744 of biosig.c on the current master branch (35a819fa), when the Tag is 3:
else if (tag==3) {
// character code
char v[17]; // [1]
if (len>16) fprintf(stderr,"Warning MFER tag2 incorrect length %i>16\n",len);
curPos += ifread(&v,1,len,hdr);
v[len] = 0;
In this case, the overflowed buffer is the newly-declared `v` \[1\] instead of `buf`. Since `v` is only 17 bytes large, much smaller values of `len` (even those encoded using a single octet) can trigger an overflow in this code path.
CVSS Score
9.8
EPSS Score
0.001
Published
2025-08-25
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>4\n",len);
curPos += ifread(buf,1,len,hdr);
CVSS Score
9.8
EPSS Score
0.001
Published
2025-08-25
An integer overflow vulnerability exists in the GDF parsing functionality of The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). A specially crafted GDF file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.
CVSS Score
9.8
EPSS Score
0.001
Published
2025-08-25
A heap-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.
CVSS Score
9.8
EPSS Score
0.001
Published
2025-08-25
An integer overflow vulnerability exists in the ABF parsing functionality of The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). A specially crafted ABF file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.
CVSS Score
9.8
EPSS Score
0.001
Published
2025-08-25
A heap-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.
CVSS Score
9.8
EPSS Score
0.001
Published
2025-08-25
A heap-based buffer overflow vulnerability exists in the ISHNE parsing functionality of The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). A specially crafted ISHNE ECG annotations file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.
CVSS Score
9.8
EPSS Score
0.001
Published
2025-08-25