What is CVE-2025-52473?

CVE-2025-52473 is a medium-severity vulnerability in Open-quantum-safe Liboqs, classified under Information Disclosure. CVSS score: 5.9/10. Published 2025-07-10.

How severe is CVE-2025-52473?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Is CVE-2025-52473 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Information disclosure in Open-quantum-safe Liboqs

CVE-2025-52473

liboqs is a C-language cryptographic library that provides implementations of post-quantum cryptography algorithms. Multiple secret-dependent branches have been identified in the reference implementation of the HQC key encapsulation mechan…

Vulnerability class: Information Disclosure

EPSS: 0.002 (37.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Open-quantum-safe Liboqs — versions < 0.14.0

Weakness classification (CWE)

CWE-200 — Information Disclosure

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

https://github.com/open-quantum-safe/liboqs/security/advisories/GHSA-qq3m-rq9v-jfgm (x_refsource_CONFIRM)
https://github.com/open-quantum-safe/liboqs/commit/4215362acbf69b88fe1777c4c052f154e29f9897 (x_refsource_MISC)

Frequently asked questions

What is CVE-2025-52473?: CVE-2025-52473 is a medium-severity vulnerability in Open-quantum-safe Liboqs, classified under Information Disclosure. CVSS score: 5.9/10. Published 2025-07-10.
How severe is CVE-2025-52473?: Medium severity. CVSS v3 base score is 5.9 out of 10.
Is CVE-2025-52473 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.