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.
References
| Link | Resource |
|---|---|
| https://talosintelligence.com/vulnerability_reports/TALOS-2025-2234 | Exploit Third Party Advisory |
Configurations
History
02 Sep 2025, 16:34
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://talosintelligence.com/vulnerability_reports/TALOS-2025-2234 - Exploit, Third Party Advisory | |
| Summary |
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| First Time |
Libbiosig Project
Libbiosig Project libbiosig |
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| CPE | cpe:2.3:a:libbiosig_project:libbiosig:*:*:*:*:*:*:*:* |
25 Aug 2025, 14:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-08-25 14:15
Updated : 2025-09-02 16:34
NVD link : CVE-2025-54487
Mitre link : CVE-2025-54487
CVE.ORG link : CVE-2025-54487
JSON object : View
Products Affected
libbiosig_project
- libbiosig
CWE
CWE-121
Stack-based Buffer Overflow