PT-2025-29131 · Liboqs · Liboqs

Zhenzhi Lai + 1 · Published 2025-07-10 · Updated 2025-08-22 · CVE-2025-52473

Positive Technologies (AI Summary)

CVSS v3.1

5.9

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions: liboqs versions prior to 0.14.0

Description: liboqs is a C-language cryptographic library providing post-quantum cryptography algorithm implementations. Secret-dependent branches were identified in the HQC key encapsulation mechanism reference implementation when compiled with Clang at optimization levels above -O0. A proof-of-concept local attack exploits this secret-dependent information to recover the entire secret key.

Recommendations: Update to version 0.14.0 or later.

Exploit

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

BDU:2026-00102

CVE-2025-52473

GHSA-QQ3M-RQ9V-JFGM

OPENSUSE-SU-2025:15339-1

Affected Products

Liboqs

References · 10

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/52xxx/CVE-2025-52473.json · Exploit
• https://github.com/open-quantum-safe/liboqs/security/advisories/GHSA-qq3m-rq9v-jfgm · Vendor Advisory
• https://github.com/open-quantum-safe/liboqs/commit/4215362acbf69b88fe1777c4c052f154e29f9897 · Patch
• https://osv.dev/vulnerability/CVE-2025-52473 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-00102 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2025:15339-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-52473 · Security Note
• https://twitter.com/CVEnew/status/1943668219371532424 · Twitter Post
• https://suse.com/security/cve/CVE-2025-52473 · Note
• https://t.me/cveNotify/133204 · Telegram Post