How severe is CVE-2025-54462?

CVE-2025-54462 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-2025-54462 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-54462?

CVE-2025-54462 affects Libbiosig Project Libbiosig. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-54462?

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-2025-54462 have an EU (EUVD) identifier?

Yes. CVE-2025-54462 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25688.

When was CVE-2025-54462 published?

CVE-2025-54462 was published on 2025-08-25 and last updated on 2026-06-17.

CVE-2025-54462

CVE-2025-54462 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-122.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-25688
Weakness: CWE-122
Affected product: Libbiosig Project Libbiosig
Published: 2025-08-25
Last modified: 2026-06-17

Description

A heap-based buffer overflow vulnerability exists in the Nex parsing functionality of The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). A specially crafted .nex file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.

Frequently asked questions

What is CVE-2025-54462?: A heap-based buffer overflow vulnerability exists in the Nex parsing functionality of The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). A specially crafted .nex file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.
How severe is CVE-2025-54462?: CVE-2025-54462 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-2025-54462 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-54462?: CVE-2025-54462 affects Libbiosig Project Libbiosig. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-54462?: 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-2025-54462 have an EU (EUVD) identifier?: Yes. CVE-2025-54462 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25688.
When was CVE-2025-54462 published?: CVE-2025-54462 was published on 2025-08-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:libbiosig_project:libbiosig:*:*:*:*:*:*:*:*

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