CVE-2025-66044
Several stack-based buffer overflow vulnerabilities exists in the MFER parsing functionality of...
Several stack-based buffer overflow vulnerabilities exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.1. A specially crafted MFER file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger these vulnerabilities.When Tag is 64
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Several stack-based buffer overflow vulnerabilities exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.1. A specially crafted MFER file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger these vulnerabilities.When Tag is 64
- Record
CVE-2025-66044- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-121
- Updated
- 2026-11-02
EUVDEUVD-2025-202763
Several stack-based buffer overflow vulnerabilities exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.1. A specially crafted MFER file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger these vulnerabilities.When Tag is 64
- Record
EUVD-2025-202763- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-hh9q-f437-jrxh
Several stack-based buffer overflow vulnerabilities exists in the MFER parsing functionality of...
Several stack-based buffer overflow vulnerabilities exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.1. A specially crafted MFER file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger these vulnerabilities.When Tag is 64
- Record
GHSA-hh9q-f437-jrxh- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-121, CWE-787
- Updated
- 2026-11-02
NVD
Several stack-based buffer overflow vulnerabilities exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.1. A specially crafted MFER file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger these vulnerabilities.When Tag is 64
- Record
CVE-2025-66044- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-121, CWE-787
- Updated
- 2026-11-02
OSV
Several stack-based buffer overflow vulnerabilities exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.1. A specially crafted MFER file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger these vulnerabilities.When Tag is 64
- Record
CVE-2025-66044- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2025-66044
Several stack-based buffer overflow vulnerabilities exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.1. A specially crafted MFER file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger these vulnerabilities.When Tag is 64
- Record
DEBIAN-CVE-2025-66044- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2025-66044
Several stack-based buffer overflow vulnerabilities exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.1. A specially crafted MFER file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger these vulnerabilities.When Tag is 64
- Record
UBUNTU-CVE-2025-66044- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
biosigDebian:12 |
All versions, plus listed versions 2.5.0-12.5.2-12.5.2-22.6.0-12.6.1-13.9.0-13.9.5-1 |
None known |
biosigDebian:13 |
All versions, plus listed versions 3.9.0-13.9.5-1 |
None known |
biosigDebian:14 |
before 3.9.5-1, plus listed versions 3.9.0-1 |
3.9.5-1 |
biosigUbuntu:Pro:22.04:LTS |
All versions, plus listed versions 2.1.2-42.1.2-4build12.1.2-4build22.3.3-12.3.3-1build12.3.3-1build22.3.3-1ubuntu0.1~esm1 |
None known |
biosigUbuntu:Pro:24.04:LTS |
All versions, plus listed versions 2.5.0-1build22.5.2-12.5.2-1build12.5.2-22.6.0-12.6.0-1build12.6.0-1ubuntu12.6.0-1ubuntu1+esm1 |
None known |
biosigUbuntu:25.10 |
All versions, plus listed versions 2.6.1-1build33.9.0-1 |
None known |
biosigUbuntu:26.10 |
All versions, plus listed versions 3.9.0-1build33.9.5-13.9.5-1build1 |
None known |
biosigUbuntu:Pro:26.04:LTS |
All versions, plus listed versions 3.9.0-13.9.0-1build13.9.0-1build23.9.0-1build33.9.0-1ubuntu0.1~esm1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-66044 is a critical vulnerability (CVSS 9.8) in Libbiosig Project Libbiosig, published December 11, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.55%, the 45th percentile. Fixed in biosig 3.9.5-1.
References
talosintelligence.com/vulnerability_reports/TALOS-2025-2296
nvd.nist.gov/vuln/detail/CVE-2025-66044
github.com/advisories/GHSA-hh9q-f437-jrxh
security-tracker.debian.org/tracker/CVE-2025-66044
ubuntu.com/security/CVE-2025-66044
cve.org/CVERecord?id=CVE-2025-66044
sourceforge.net/p/biosig/mailman/message/59271419