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Vulnerability details: VCID-3q5d-53f1-mbeg
Vulnerability ID VCID-3q5d-53f1-mbeg
Aliases CVE-2026-20777
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 4.9
Risk 2.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-122 Heap-based Buffer Overflow
System Score Found at
epss 0.00189 https://api.first.org/data/v1/epss?cve=CVE-2026-20777
epss 0.00189 https://api.first.org/data/v1/epss?cve=CVE-2026-20777
epss 0.00189 https://api.first.org/data/v1/epss?cve=CVE-2026-20777
cvssv3.1 8.1 https://talosintelligence.com/vulnerability_reports/TALOS-2026-2362
ssvc Track https://talosintelligence.com/vulnerability_reports/TALOS-2026-2362
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-20777
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-20777
1130889 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1130889
TALOS-2026-2362 https://talosintelligence.com/vulnerability_reports/TALOS-2026-2362
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://talosintelligence.com/vulnerability_reports/TALOS-2026-2362
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:N/T:T/P:M/B:A/M:M/D:T/2026-03-03T15:13:53Z/ Found at https://talosintelligence.com/vulnerability_reports/TALOS-2026-2362
Exploit Prediction Scoring System (EPSS)
Percentile 0.40602
EPSS Score 0.00189
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T16:50:37.192181+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2026/20xxx/CVE-2026-20777.json 38.6.0