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CVE-2024-54137

21
FAUCET Score

CVE-2024-54137 is a correctness error in the liboqs C-language cryptographic library, specifically affecting the reference implementation of the HQC key encapsulation mechanism. An indexing error causes part of the secret key to be mishandled, leading to an incorrect shared secret when decapsulating a malformed ciphertext. This vulnerability is rated High severity (CVSS 7.5), indicating it can be exploited remotely with low complexity to achieve high confidentiality impact. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.12.0CPE matchmatch criteria
cpe:2.3:a:openquantumsafe:liboqs:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.4HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
32.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 12th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2024-54137Important

liboqs: liboqs has a correctness error in HQC decapsulation

Dec 6, 2024

References

github.com / open-quantum-safe/liboqs/commit/cce1bfde4e52c524b087b9687020d283fbde0f24
Patch
github.com / open-quantum-safe/liboqs/security/advisories/GHSA-gpf4-vrrw-r8v7
PatchVendor Advisory