Vulnerability · CVE-2025-66047
Several stack-based buffer overflow vulnerabilities exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.1.
Published Dec 11, 2025 · catalog updated Dec 11, 2025 · The Biosig Project
Last checked Nov 2, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2025-66047. EPSS is 0.55%. Act only if a listed version of The Biosig Project is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
Same product and reporting
- CVE-2026-22891 · Critical
- CVE-2026-20777 · High
- CVE-2025-64736 · High
- CVE-2025-66048 · Critical
- CVE-2025-66043 · Critical
- Severity
- Critical9.8
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.55%
- Remediation
- Vendor / distro source
- Affected products
- vendor The Biosig Project libbiosig 3.9.1
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 131
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor The Biosig Project libbiosig 3.9.13.9.1
How to fix CVE-2025-66047
No stored fix
No vendor fix text is stored. Use the linked advisory before you change production.
Version check
Seen in 3.9.1
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2025-66047. EPSS is 0.55%. Act only if a listed version of The Biosig Project is installed.
Which versions are affected?
Compare what you have installed with The Biosig Project libbiosig 3.9.1 3.9.1. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.55%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Dec 11, 2025 · EUVD
Detected
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 131
Dec 11, 2025 · EUVD
Updated
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 131
Sources
- CVE.orgVulnerability recordCVE-2025-66047
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2025-66047
30-day exploitation probability 0.55%
first.org - EUVDVulnerability recordEUVD-2025-202760
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 T
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Nov 2, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- FIRST EPSSNov 2, 2026
- CVE.orgOct 27, 2026
- EUVDOct 27, 2026