CVE-2026-33585

Tenant impersonation via unexpired browser sessions

Published May 13, 2026 · Updated May 13, 2026

Session-management weakness in Arqit SKA-Platform before 26.03 allows physically proximate attackers to impersonate an authenticated tenant user. The Keycloak interface fails to expire an idle browser session because it improperly manages the idle-timeout parameter, leaving the authenticated tenant context reusable. Exploitation requires physical access to an unattended device and interaction with its still-authenticated browser; resulting actions remain limited to that tenant user's permissions.

CVSS severity3.8
Low
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Session-management weakness in Arqit SKA-Platform before 26.03 allows physically proximate attackers to impersonate an authenticated tenant user. The Keycloak interface fails to expire an idle browser session because it improperly manages the idle-timeout parameter, leaving the authenticated tenant context reusable. Exploitation requires physical access to an unattended device and interaction with its still-authenticated browser; resulting actions remain limited to that tenant user's permissions.

The record

CVE
CVE-2026-33585
Published
May 13, 2026
Updated
May 13, 2026
Vendor
Arqit Quantum Inc.
Product
SKA-Platform
Classifications
CWE-233, T1185
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 13, 2026CVE publishedPublication date reported by the CVE source.
  2. May 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <26.03

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Arqit Quantum Inc. · SKA-Platformversion=0 <26.03

Published CVSS scores

3.8ENISACVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-233Improper Handling of Parameters
T1185Browser Session Hijacking

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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