CVE-2026-20777

EUVD-2026-9291
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.1 HIGH
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 41.61%
Affected Products (NVD)
VendorProductVersion
libbiosig_projectlibbiosig
3.9.2
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
biosig
bookworm
no-dsa
bullseye
postponed
forky
3.9.5-1
fixed
sid
3.9.5-1
fixed
trixie
no-dsa
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
biosig
jammy
needs-triage
noble
needs-triage
questing
ignored
resolute
needs-triage
Common Weakness Enumeration
References
https://talosintelligence.com/vulnerability_reports/TALOS-2026-2362
https://www.talosintelligence.com/vulnerability_reports/TALOS-2026-2362