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.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Arqit Symmetric Key Agreement Platform unaffected
Version Status Constraints
0 affected < 26.03

No data.

No data.

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No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.cvcn.gov.it/cvcn/cve/CVE-2026-33583 cve-icon cve-icon
History

Wed, 13 May 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Wed, 13 May 2026 18:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Arqit SKA-Platform Vulnerable to Key Exposure
Weaknesses CWE-749
References
Metrics cvssV3_1

{'score': 8.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: ENISA

Published:

Updated: 2026-05-13T18:57:55.074Z

Reserved: 2026-03-23T12:53:47.473Z

Link: CVE-2026-33583

cve-icon Vulnrichment

Updated: 2026-05-13T18:57:45.502Z

cve-icon NVD

Status : Received

Published: 2026-05-13T19:17:06.873

Modified: 2026-05-13T19:17:06.873

Link: CVE-2026-33583

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-13T19:45:03Z

Weaknesses