CVE-2026-20777 — Heap-based Buffer Overflow in Biosig Project Libbiosig

CWE-122 — Heap-based Buffer Overflow7 documents7 sources
Severity
8.1HIGHNVD
EPSS
0.2%
top 60.25%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
THE Biosig Project LibbiosigLibbiosig Project Libbiosig
Timeline
PublishedMar 3
Latest updateMar 11

Description

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.

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 2.2 | Impact: 5.9

Affected Packages2 packages

▶CVEListV5the_biosig_project/libbiosig3.9.2, Master Branch (db9a9a63)+1

🔴Vulnerability Details

3
OSV
CVE-2026-20777: A heap-based buffer overflow vulnerability exists in the Nicolet WFT parsing functionality of The Biosig Project libbiosig 3↗2026-03-03
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GHSA
GHSA-2gq5-x5qp-v68m: A heap-based buffer overflow vulnerability exists in the Nicolet WFT parsing functionality of The Biosig Project libbiosig 3↗2026-03-03
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CVEList
CVE-2026-20777: A heap-based buffer overflow vulnerability exists in the Nicolet WFT parsing functionality of The Biosig Project libbiosig 3↗2026-03-03
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📋Vendor Advisories

1
Debian
CVE-2026-20777: biosig - A heap-based buffer overflow vulnerability exists in the Nicolet WFT parsing fun...↗2026
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🕵️Threat Intelligence

2
Talos
DirectX, OpenFOAM, Libbiosig vulnerabilities↗2026-03-11
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Wiz
CVE-2026-20777 Impact, Exploitability, and Mitigation Steps | Wiz↗
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CVE-2026-20777 — Heap-based Buffer Overflow | cvebase