CVE-2026-33583
Arqit SKA-Platform Vulnerable to Key Exposure
CVSS Score
8.7
EPSS Score
0.0%
EPSS Percentile
0th
Exposure of the QKEY (used as input into the ‘OTA-Quantum’ device registration process) and internal system keys via an unauthenticated and unencrypted HTTP GET method in the Arqit Symmetric Key Agreement Platform. This issue affects Symmetric Key Agreement Platform: before 26.03.
| CWE | CWE-749 |
| Vendor | arqit |
| Product | symmetric key agreement platform |
| Published | May 13, 2026 |
| Last Updated | May 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
Arqit / Symmetric Key Agreement Platform
0 < 26.03