---
cve: "CVE-2026-6330"
severity: "MEDIUM"
cvss: 6.3
epss: "0.2%"
vendor: "wolfSSL"
kev: false
exploited: false
published: "2026-06-25 22:17:02"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T01:04:27+02:00"
---

# CVE-2026-6330

> 6.3 MEDIUM · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- ac01707f552c611fbd135cc723b2682b3e7f80f2 (Commit)

## Referenzen

- <https://github.com/wolfSSL/wolfssl/pull/10192>
- <https://www.wolfssl.com/docs/security-vulnerabilities/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-6330) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_