UBUNTU-CVE-2026-20777

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2026-20777
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-20777.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-20777
Upstream
Downstream
Related
Published
2026-03-03T15:16:00Z
Modified
2026-09-02T19:35:30Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:Pro:24.04:LTS / biosig

Package

Name
biosig
Purl
pkg:deb/ubuntu/biosig?arch=source&distro=esm-apps%2Fnoble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.6.0-1ubuntu1+esm1

Affected versions

2.*
2.5.0-1build2
2.5.2-1
2.5.2-1build1
2.5.2-2
2.6.0-1
2.6.0-1build1
2.6.0-1ubuntu1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "biosig-tools",
            "binary_version": "2.6.0-1ubuntu1+esm1"
        },
        {
            "binary_name": "libbiosig3",
            "binary_version": "2.6.0-1ubuntu1+esm1"
        },
        {
            "binary_name": "octave-biosig",
            "binary_version": "2.6.0-1ubuntu1+esm1"
        },
        {
            "binary_name": "python3-biosig",
            "binary_version": "2.6.0-1ubuntu1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-20777.json"

Ubuntu:25.10 / biosig

Package

Name
biosig
Purl
pkg:deb/ubuntu/biosig?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.6.1-1build3
3.*
3.9.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "biosig-tools",
            "binary_version": "3.9.0-1"
        },
        {
            "binary_name": "libbiosig3",
            "binary_version": "3.9.0-1"
        },
        {
            "binary_name": "octave-biosig",
            "binary_version": "3.9.0-1"
        },
        {
            "binary_name": "python3-biosig",
            "binary_version": "3.9.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-20777.json"

Ubuntu:Pro:26.04:LTS / biosig

Package

Name
biosig
Purl
pkg:deb/ubuntu/biosig?arch=source&distro=esm-apps%2Fresolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
3.9.0-1ubuntu0.1~esm1

Affected versions

3.*
3.9.0-1
3.9.0-1build1
3.9.0-1build2
3.9.0-1build3

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "biosig-tools",
            "binary_version": "3.9.0-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libbiosig3",
            "binary_version": "3.9.0-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "octave-biosig",
            "binary_version": "3.9.0-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "python3-biosig",
            "binary_version": "3.9.0-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-20777.json"