What is the CVSS score of CVE-2026-22886?

CVE-2026-22886 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.2%.

Which versions of Openmq are affected by CVE-2026-22886?

OpenMQ deployments are vulnerable to unauthorized administrative access through a hardcoded default credential (admin/admin) that cannot be forced to change, allowing attackers to gain complete…

How to fix or mitigate CVE-2026-22886?

Within 24 hours: Identify all OpenMQ instances in production and development environments; immediately change the default admin password to a strong, unique credential and document the change. Within 7 days: Implement network segmentation to restrict imqbrokerd TCP management service access to authorized administrative hosts only; enable authentication logging and alerting on failed login attempts. Within 30 days: Conduct forensic review of broker access logs for unauthorized activity; evaluate OpenMQ alternatives or migration timelines; establish baseline configuration management to prevent default credentials on future deployments.

Openmq CVE-2026-22886

CRITICAL

Use of Weak Credentials (CWE-1391)

2026-03-03 emo@eclipse.org

Information Disclosure Openmq

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:05 vuln.today

CVE Published

Mar 03, 2026 - 10:16 nvd

CRITICAL 9.8

DescriptionCVE.org

OpenMQ exposes a TCP-based management service (imqbrokerd) that by default requires authentication. However, the product ships with a default administrative account (admin/ admin) and does not enforce a mandatory password change on first use. After the first successful login, the server continues to accept the default password indefinitely without warning or enforcement.

In real-world deployments, this service is often left enabled without changing the default credentials. As a result, a remote attacker with access to the service port could authenticate as an administrator and gain full control of the protocol’s administrative features.