CVE-2025-54487: Buffer Overflow
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; int8t 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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-54487?
CVE-2025-54487 is classified as a critical severity vulnerability due to the potential for arbitrary code execution.
How do I fix CVE-2025-54487?
To fix CVE-2025-54487, upgrade The Biosig Project libbiosig to version 3.9.1 or later, which addresses this vulnerability.
What type of vulnerability is CVE-2025-54487?
CVE-2025-54487 is a stack-based buffer overflow vulnerability.
What could happen if CVE-2025-54487 is exploited?
If exploited, CVE-2025-54487 may allow an attacker to execute arbitrary code on the affected system.
Which versions of libbiosig are affected by CVE-2025-54487?
CVE-2025-54487 affects The Biosig Project libbiosig version 3.9.0 and the Master Branch as of commit 35a819fa.