Home/CVE/A heap-based buffer overflow vulnerability exists in the Nicolet WFT parsing functionality of The Biosig Project libbios
CVE

CVE-2026-20777

A heap-based buffer overflow vulnerability exists in the Nicolet WFT parsing functionality of The Biosig Project libbios

A heap-based buffer overflow vulnerability exists in the Nicolet WFT parsing functionality of The Biosig Project libbiosig 3.9.2 and Master Branch (db9a9a63). A specially crafted .wft file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.

HIGH · CVSS 8.1 EPSS 0.00189
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-122Heap-based Buffer Overflow
▤

Affected Products & Versions

1
libbiosig project libbiosigall versions
⚠

Public Exploits & PoCs

2
poctalosintelligence.com · TALOS-2026-2362talosintelligence.com
pocwww.talosintelligence.com · TALOS-2026-2362www.talosintelligence.com
▣

Scoring & Timeline

8.1
HIGH · CVSS v3.1 · talos-cna@cisco.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD03 Mar 2026 · 03:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
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