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CVE PROGRAM SOURCE RECORD5.9 Medium

CVE-2025-52473

liboqs secret-dependent branching in HQC reference implementation when compiled with Clang 17-20

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

open-quantum-safe liboqs

  • < 0.14.0affected

References