How severe is CVE-2026-41166?

CVE-2026-41166 has a CVSS 3.x base score of 7.0, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability low.

Is CVE-2026-41166 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-41166?

CVE-2026-41166 affects Openremote. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-41166?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-41166 have an EU (EUVD) identifier?

Yes. CVE-2026-41166 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25096.

When was CVE-2026-41166 published?

CVE-2026-41166 was published on 2026-04-22 and last updated on 2026-06-17.

CVE-2026-41166

CVE-2026-41166 is a high-severity vulnerability in Openremote with a CVSS 3.x base score of 7.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-284.

Key facts

Severity: High (CVSS 3.x base score 7.0)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-25096
Weakness: CWE-284
Affected product: Openremote
Published: 2026-04-22
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-41166?: 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.
How severe is CVE-2026-41166?: CVE-2026-41166 has a CVSS 3.x base score of 7.0, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability low.
Is CVE-2026-41166 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-41166?: CVE-2026-41166 affects Openremote. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-41166?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-41166 have an EU (EUVD) identifier?: Yes. CVE-2026-41166 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25096.
When was CVE-2026-41166 published?: CVE-2026-41166 was published on 2026-04-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:openremote:openremote:*:*:*:*:*:*:*:*

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