CVE-2025-52473 - Liboqs HQC Key Encapsulation Mechanism Secret-Dependent Branch Vulnerability

CVE-2025-52473 - Liboqs HQC Key Encapsulation Mechanism Secret-Dependent Branch Vulnerability

https://cvefeed.io/rssfeed/latest.atom / Thu, 07/10/2025 - 23:29
CVE ID : CVE-2025-52473
Published : July 10, 2025, 7:15 p.m. | 54 minutes ago
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.
Severity: 5.9 | MEDIUM
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