CVE-2026-90456

Use of default credentials in Malcolm

Published Sep 11, 2026 CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed
Description
An example environment-configuration file for a bundled inventory-management component ships with a fixed, publicly-known administrative password. A deployment that copies this example file into active configuration without running the setup routine that regenerates credentials will expose that component's administrative interface to anyone aware of the default value.

Remediation

Vendor Solution

The latest version of Malcolm (September 2026 or later) fixes these vulnerabilities. Affected users are encouraged to update their instance of Malcolm to the latest version.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Default Administration Credentials in Inventory‑Management Component Expose Malicious Access Use of default credentials in Malcolm
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Type Values Removed Values Added
Title Default Administration Credentials in Inventory‑Management Component Expose Malicious Access
Type Values Removed Values Added
Title Default Password in Inventory‑Management Component Enables Admin Access
Type Values Removed Values Added
Title Default Password in Inventory‑Management Component Enables Admin Access
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Default Administrative Password Exposed in Malcolm Inventory‑Management Component
Type Values Removed Values Added
First Time appeared Cisagov
Cisagov malcolm
Vendors & Products Cisagov
Cisagov malcolm
Type Values Removed Values Added
Title Default Administrative Password Exposed in Malcolm Inventory‑Management Component
Type Values Removed Values Added
Title Default Password in Inventory‑Management Component Exposes Administrative Interface
Type Values Removed Values Added
Title Default Password in Inventory‑Management Component Exposes Administrative Interface
Type Values Removed Values Added
Title Default Administrative Password Disclosure in Malcolm Inventory‑Management Component
Type Values Removed Values Added
Title Default Administrative Password Disclosure in Malcolm Inventory‑Management Component
Type Values Removed Values Added
Description An example environment-configuration file for a bundled inventory-management component ships with a fixed, publicly-known administrative password. A deployment that copies this example file into active configuration without running the setup routine that regenerates credentials will expose that component's administrative interface to anyone aware of the default value.
Weaknesses CWE-1392
References
Metrics cvssV4_0

{'score': 9.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
icscert
Published
Updated
Oct 2, 2026, 8:46 PM
Reserved
Sep 11, 2026, 9:00 PM
Status
Awaiting Analysis
Published
Sep 11, 2026, 10:16 PM
Modified
Oct 2, 2026, 9:16 PM