Is CVE-2026-20777 actively exploited?

No active exploitation of CVE-2026-20777 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-20777 be exploited remotely?

Yes. CVE-2026-20777 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-20777?

CVE-2026-20777 has a CVSS score of 8.1 (HIGH).

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HIGH

CVE-2026-20777

CWE-122Published: March 3, 2026· Updated: Mar 5, 2026

8.1

CVSS v3.1

EPSS:0.10%probability of exploitation in 30 daysPercentile:27.6th

Official 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.

NVD Source

Technical Analysis

CVE-2026-20777 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.1.