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Fencer Vulns
high 7.4

CVE-2024-54137 json

liboqs has a correctness error in HQC decapsulation

published 2024-12-06 23 mo ago modified 2026-06-17 4 mo ago also EUVD-2024-52308

cvss
7.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 34%
public exploits
0
none known

Summary

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.

Patch / fix

  • open_quantum_safe liboqs 0.12.0
  • oqs-provider SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 0.7.0-150600.3.3.1
  • liboqs SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 0.12.0-150600.3.3.1

suse advisories SUSE-SU-2025:0005-1

  • liboqs openSUSE Tumbleweed 0.12.0-1.1

opensuse advisories openSUSE-SU-2024:14580-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-54137 updated cvss 7.4

liboqs: liboqs has a correctness error in HQC decapsulation

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
22 mo ago

Exploit prediction

0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

  • open-quantum-safe liboqs
  • open_quantum_safe liboqs

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.