CVE-2025-54481 - Biosig Project libbiosig Stack-Based Buffer Overflow Vulnerability

CVE-2025-54481 - Biosig Project libbiosig Stack-Based Buffer Overflow Vulnerability

https://cvefeed.io/rssfeed/latest.atom / Mon, 08/25/2025 - 17:36
CVE ID : CVE-2025-54481
Published : Aug. 25, 2025, 2:15 p.m. | 34 minutes ago
Description : 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.
Severity: 9.8 | CRITICAL
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