How severe is CVE-2024-54137?

CVE-2024-54137 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2024-54137 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-54137?

CVE-2024-54137 affects Openquantumsafe Liboqs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-54137?

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

Does CVE-2024-54137 have an EU (EUVD) identifier?

Yes. CVE-2024-54137 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-52308.

When was CVE-2024-54137 published?

CVE-2024-54137 was published on 2024-12-06 and last updated on 2026-06-17.

CVE-2024-54137

CVE-2024-54137 is a high-severity vulnerability in Openquantumsafe Liboqs with a CVSS 3.x base score of 7.4. 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-200.

Key facts

Severity: High (CVSS 3.x base score 7.4)
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-52308
Weakness: CWE-200
Affected product: Openquantumsafe Liboqs
Published: 2024-12-06
Last modified: 2026-06-17

Description

liboqs is a C-language cryptographic library that provides implementations of post-quantum cryptography algorithms. A correctness error has been identified in the reference implementation of the HQC key encapsulation mechanism. Due to an indexing error, part of the secret key is incorrectly treated as non-secret data. This results in an incorrect shared secret value being returned when the decapsulation function is called with a malformed ciphertext. This vulnerability is fixed in 0.12.0.

Frequently asked questions

What is CVE-2024-54137?: liboqs is a C-language cryptographic library that provides implementations of post-quantum cryptography algorithms. A correctness error has been identified in the reference implementation of the HQC key encapsulation mechanism. Due to an indexing error, part of the secret key is incorrectly treated as non-secret data. This results in an incorrect shared secret value being returned when the decapsulation function is called with a malformed ciphertext. This vulnerability is fixed in 0.12.0.
How severe is CVE-2024-54137?: CVE-2024-54137 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2024-54137 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-54137?: CVE-2024-54137 affects Openquantumsafe Liboqs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-54137?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-54137 have an EU (EUVD) identifier?: Yes. CVE-2024-54137 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-52308.
When was CVE-2024-54137 published?: CVE-2024-54137 was published on 2024-12-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:openquantumsafe:liboqs:*:*:*:*:*:*:*:*

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