How severe is CVE-2024-23809?

CVE-2024-23809 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-23809 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-23809?

CVE-2024-23809 primarily affects Libbiosig Project Libbiosig. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-23809?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2024-23809 have an EU (EUVD) identifier?

Yes. CVE-2024-23809 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-21262.

When was CVE-2024-23809 published?

CVE-2024-23809 was published on 2024-02-20 and last updated on 2026-06-17.

CVE-2024-23809

CVE-2024-23809 is a critical-severity vulnerability in Libbiosig Project Libbiosig with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-415.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-21262
Weakness: CWE-415
Affected product: Libbiosig Project Libbiosig
Published: 2024-02-20
Last modified: 2026-06-17

Description

A double-free vulnerability exists in the BrainVision ASCII Header Parsing functionality of The Biosig Project libbiosig 2.5.0 and Master Branch (ab0ee111). A specially crafted .vdhr file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.

Frequently asked questions

What is CVE-2024-23809?: A double-free vulnerability exists in the BrainVision ASCII Header Parsing functionality of The Biosig Project libbiosig 2.5.0 and Master Branch (ab0ee111). A specially crafted .vdhr file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.
How severe is CVE-2024-23809?: CVE-2024-23809 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-23809 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-23809?: CVE-2024-23809 primarily affects Libbiosig Project Libbiosig. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-23809?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2024-23809 have an EU (EUVD) identifier?: Yes. CVE-2024-23809 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-21262.
When was CVE-2024-23809 published?: CVE-2024-23809 was published on 2024-02-20 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:libbiosig_project:libbiosig:2.5.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:40:*:*:*:*:*:*:*

More vulnerabilities in Libbiosig Project Libbiosig

CVE-2026-22891 — Critical (CVSS 9.8): A heap-based buffer overflow vulnerability exists in the Intan CLP parsing functionality of The Biosig Project…
CVE-2025-66048 — Critical (CVSS 9.8): Several stack-based buffer overflow vulnerabilities exists in the MFER parsing functionality of The Biosig Project…
CVE-2025-66047 — Critical (CVSS 9.8): Several stack-based buffer overflow vulnerabilities exists in the MFER parsing functionality of The Biosig Project…
CVE-2025-66046 — Critical (CVSS 9.8): Several stack-based buffer overflow vulnerabilities exists in the MFER parsing functionality of The Biosig Project…
CVE-2025-66045 — Critical (CVSS 9.8): Several stack-based buffer overflow vulnerabilities exists in the MFER parsing functionality of The Biosig Project…
CVE-2025-66044 — Critical (CVSS 9.8): Several stack-based buffer overflow vulnerabilities exists in the MFER parsing functionality of The Biosig Project…

All CVEs affecting Libbiosig Project Libbiosig →

Other CWE-415 (Double Free) vulnerabilities

CVE-2018-0101 — Critical (CVSS 10.0): A vulnerability in the Secure Sockets Layer (SSL) VPN functionality of the Cisco Adaptive Security Appliance (ASA)…
CVE-2026-8925 — Critical (CVSS 9.8): The curl logic that works with SASL authentication could end up cleaning up the GSASL context *twice* without clearing…
CVE-2020-37239 — Critical (CVSS 9.8): libbabl 0.1.62 contains a broken double free detection vulnerability that allows attackers to bypass memory safety…
CVE-2026-43011 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: net/x25: Fix potential double free of skb When…
CVE-2026-31609 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: smb: client: avoid double-free in…
CVE-2026-31608 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: smb: server: avoid double-free in…

Browse all CWE-415 (Double Free) vulnerabilities →