Vulnerability Description
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 mechanism when it is compiled with Clang for optimization levels above -O0 (-O1, -O2, etc). A proof-of-concept local attack exploits this secret-dependent information to recover the entire secret key. This vulnerability is fixed in 0.14.0.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openquantumsafe | Liboqs | < 0.14.0 |
Related Weaknesses (CWE)
References
- https://github.com/open-quantum-safe/liboqs/commit/4215362acbf69b88fe1777c4c052fPatch
- https://github.com/open-quantum-safe/liboqs/security/advisories/GHSA-qq3m-rq9v-jVendor Advisory
FAQ
What is CVE-2025-52473?
CVE-2025-52473 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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 implementat...
How severe is CVE-2025-52473?
CVE-2025-52473 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-52473?
Check the references section above for vendor advisories and patch information. Affected products include: Openquantumsafe Liboqs.