CVE-2026-6330
The ML-KEM ARM64 NEON ciphertext comparison only compares half of the input, breaking the Fujisaki-Okamoto transform's implicit rejection and weakening IND-CCA2 security on that code path. The constant-time comparison effectively ignored part of the re-encrypted ciphertext, so a decapsulating party could fail to detect a manipulated ciphertext and proceed without the standard's required implicit rejection.
- Score
- CVSS 3.1 6.5 Medium
- Status
- Analyzed - facts@wolfssl.com
- Published
- 2026-06-25
- Last modified
- 2026-06-26
- Weaknesses
- CWE-327
Affected products
References
- https://github.com/wolfSSL/wolfssl/pull/10192
- https://www.wolfssl.com/docs/security-vulnerabilities/
