# CVE-2024-37305

## Summary

- **CVE ID:** CVE-2024-37305
- **Severity:** HIGH
- **CVSS Score:** 8.2 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H)
- **CWE:** CWE-120, CWE-130, CWE-190, CWE-680, CWE-805
- **Published:** Jun 17, 2024
- **Last Modified:** Mar 13, 2026

## Description

oqs-provider is a provider for the OpenSSL 3 cryptography library that adds support for post-quantum cryptography in TLS, X.509, and S/MIME using post-quantum algorithms from liboqs. Flaws have been identified in the way oqs-provider handles lengths decoded with DECODE_UINT32 at the start of serialized hybrid (traditional + post-quantum) keys and signatures. Unchecked length values are later used for memory reads and writes; malformed input can lead to crashes or information leakage. Handling of plain/non-hybrid PQ key operation is not affected. This issue has been patched in in v0.6.1. All users are advised to upgrade. There are no workarounds for this issue.

## Affected Products

- open-quantum-safe — oqs-provider (< 0.6.1)

## References

- [CNA](https://github.com/open-quantum-safe/oqs-provider/security/advisories/GHSA-pqvr-5cr8-v6fx)
- [CNA](https://github.com/open-quantum-safe/oqs-provider/pull/416)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.45%
- **EPSS Percentile:** 37.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._