CVE-2025-52473

MEDIUM EPSS 10.0%
Published Jul 10, 202511mo ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Jul 10, 2025 11mo ago
Last Modified Jun 17, 2026 2w 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.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
10.0% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

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

Affected Products 1

VendorProductVersionRange
openquantumsafeliboqs* <0.14.0

References 2

  • github.com https://github.com/open-quantum-safe/liboqs/commit/4215362acbf69b88fe1777c4c052f154e29f9897
    Patch
  • github.com https://github.com/open-quantum-safe/liboqs/security/advisories/GHSA-qq3m-rq9v-jfgm
    Vendor Advisory

Remediation

  • github.com https://github.com/open-quantum-safe/liboqs/commit/4215362acbf69b88fe1777c4c052f154e29f9897
    Patch