CVE-2025-52473

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.

Reserved 2025-06-17 | Published 2025-07-10 | Updated 2025-07-10 | Assigner GitHub_M

Problem types

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

Product status

< 0.14.0
affected

References

github.com/...liboqs/security/advisories/GHSA-qq3m-rq9v-jfgm

github.com/...ommit/4215362acbf69b88fe1777c4c052f154e29f9897

cve.org (CVE-2025-52473)

nvd.nist.gov (CVE-2025-52473)

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