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Vulnerability details: VCID-meyh-jfdn-qygx
Vulnerability ID VCID-meyh-jfdn-qygx
Aliases CVE-2025-54481
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 5.9
Risk 3.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-121 Stack-based Buffer Overflow
System Score Found at
epss 0.00519 https://api.first.org/data/v1/epss?cve=CVE-2025-54481
epss 0.00519 https://api.first.org/data/v1/epss?cve=CVE-2025-54481
cvssv3.1 9.8 https://talosintelligence.com/vulnerability_reports/TALOS-2025-2234
ssvc Track https://talosintelligence.com/vulnerability_reports/TALOS-2025-2234
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2025-54481
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-54481
1112133 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1112133
TALOS-2025-2234 https://talosintelligence.com/vulnerability_reports/TALOS-2025-2234
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://talosintelligence.com/vulnerability_reports/TALOS-2025-2234
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2025-08-25T19:10:05Z/ Found at https://talosintelligence.com/vulnerability_reports/TALOS-2025-2234
Exploit Prediction Scoring System (EPSS)
Percentile 0.67242
EPSS Score 0.00519
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T16:56:22.472553+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2025/54xxx/CVE-2025-54481.json 38.6.0