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CVE-2026-41166

Openremote broken access control

7.0 HIGHPublic exploitEPSS 0.33%
  1. Published22 Apr 2026

Description

OpenRemote is an open-source internet-of-things platform. Prior to version 1.22.1, a user who has `write:admin` in one Keycloak realm can call the Manager API to update Keycloak realm roles for users in another realm, including `master`. The handler uses the `{realm}` path segment when talking to the identity provider but does not check that the caller may administer that realm. This could result in a privilege escalation to `master` realm administrator if the attacker controls any user in `master` realm. Version 1.22.1 fixes the issue.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityHigh
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityLow
IntegrityHigh
AvailabilityLow
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L

Affected products

Openremote< 1.22.1

Remediation

Fixed in
Openremote≥ 1.22.1

References

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Frequently asked

Is CVE-2026-41166 being actively exploited?

CVE-2026-41166 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.33%.

How severe is CVE-2026-41166?

CVE-2026-41166 has a CVSS 3.1 base score of 7.0, rated high. EPSS estimates a 0.33% probability of exploitation.

Which products are affected by CVE-2026-41166?

Affected products include Openremote.

How do I fix CVE-2026-41166?

Upgrade affected software to a fixed version, for example Openremote 1.22.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-41166 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.