Arqit SKA-Platform Vulnerable to Key Exposure

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Summary

CVECVE-2026-33583
StatePUBLISHED
AssignerENISA
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-13 19:17:06 UTC
Updated2026-05-14 17:07:07 UTC
DescriptionExposure 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.

Risk And Classification

Primary CVSS: v3.1 8.7 HIGH from a6d3dc9e-0591-4a13-bce7-0f5b31ff6158

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

EPSS: 0.000410000 probability, percentile 0.123870000 (date 2026-05-25)

Problem Types: CWE-749 | CWE-749 CWE-749 Exposed dangerous method or function

VersionSourceTypeScoreSeverityVector
3.1a6d3dc9e-0591-4a13-bce7-0f5b31ff6158Secondary8.7HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
3.1CNACVSS8.7HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Arqit Symmetric Key Agreement Platform affected 26.03 semver Not specified

References

ReferenceSourceLinkTags
www.cvcn.gov.it/cvcn/cve/CVE-2026-33583 a6d3dc9e-0591-4a13-bce7-0f5b31ff6158 www.cvcn.gov.it
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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