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CVE-2025-48946

3.7 · LOW

liboqs is a C-language cryptographic library that provides implementations of post-quantum cryptography algorithms.

Published May 30, 2025CWE-327EPSS 0.24%

Overview

CVE-2025-48946 is a low-severity vulnerability. It was published on May 30, 2025 and has a CVSS 3.1 base score of 3.7 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.7, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

liboqs is a C-language cryptographic library that provides implementations of post-quantum cryptography algorithms. liboqs prior to version 0.13.0 supports the HQC algorithm, an algorithm with a theoretical design flaw which leads to large numbers of malformed ciphertexts sharing the same implicit rejection value. Currently, no concrete attack on the algorithm is known. However, prospective users of HQC must take extra care when using the algorithm in protocols involving key derivation. In particular, HQC does not provide the same security guarantees as Kyber or ML-KEM. There is currently no patch for the HQC flaw available in liboqs, so HQC is disabled by default in liboqs starting from version 0.13.0. OQS will update its implementation after the HQC team releases an updated algorithm specification.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refdurumcrustulum.com/2024/02/24/how-to-hold-kems/#hqcGitHubgithub.com/open-quantum-safe/liboqs/commit/a7d698ca9c9d98990647459253183cbe29c550afGitHubgithub.com/open-quantum-safe/liboqs/security/advisories/GHSA-3rxw-4v8q-9gq5Refgroups.google.com/a/list.nist.gov/g/pqc-forum/c/Wiu4ZQo3fP80

How CyberStrike helps

Frequently asked questions

What is CVE-2025-48946?

CVE-2025-48946 is a low-severity vulnerability. It was published on May 30, 2025 and has a CVSS 3.1 base score of 3.7 (LOW).

How severe is CVE-2025-48946?

This vulnerability has a CVSS 3.1 base score of 3.7, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-48946?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-48946?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-48946 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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