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CVE-2026-33583

Arqit SKA-Platform Vulnerable to Key Exposure

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.

CVSS 3.1 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
Arqit
Products
Symmetric Key Agreement Platform
CVE-2026-33584

Arqit SKA-Platform Enables Access to Debug Information

Exposed Keycloak management service in the Arqit Symmetric Key Agreement Platform enables unauthorized access to sensitive debug information such as metrics and health data. This issue affects Symmetric Key Agreement Platform: before 26.03.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Arqit
Products
Symmetric Key Agreement Platform
CVE-2026-33585

Arqit SKA-Platform Improper Handling of Parameters Vulnerability

Improper management of the idle timeout parameter in the Keycloak interface of the Arqit SKA-Platform enables an attacker to impersonate an authenticated tenant user via an unexpired browser session. This issue affects Symmetric Key Agreement Platform: before 26.03.

CVSS 3.1 · 3.8 Low EPSS < 1% KEV · Not listed
Vendors
Arqit
Products
Symmetric Key Agreement Platform