Arqit Symmetric Key Agreement Platform up to 26.2 Device Registration routine

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Arqit Symmetric Key Agreement Platform up to 26.2. This affects an unknown function of the component Device Registration Handler. The manipulation results in routine. This vulnerability is known as CVE-2026-33583. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic has been found in Arqit Symmetric Key Agreement Platform up to 26.2. Affected is an unknown code block of the component Device Registration Handler. The manipulation with an unknown input leads to a routine vulnerability. CWE is classifying the issue as CWE-749. The product provides an Applications Programming Interface (API) or similar interface for interaction with external actors, but the interface includes a dangerous method or function that is not properly restricted. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at cvcn.gov.it. This vulnerability is traded as CVE-2026-33583 since 03/23/2026. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available.

Upgrading to version 26.03 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-30113). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 7.0

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.7
CNA Vector (ENISA): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Routine
CWE: CWE-749
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Symmetric Key Agreement Platform 26.03

Timelineinfo

03/23/2026 CVE reserved
05/13/2026 +50 days Advisory disclosed
05/13/2026 +0 days VulDB entry created
05/13/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: cvcn.gov.it
Status: Confirmed

CVE: CVE-2026-33583 (🔒)
GCVE (CVE): GCVE-0-2026-33583
GCVE (VulDB): GCVE-100-363690
EUVD: 🔒

Entryinfo

Created: 05/13/2026 20:52
Updated: 05/13/2026 23:13
Changes: 05/13/2026 20:52 (63), 05/13/2026 23:13 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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