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CVE-2026-90456: CWE-1392 Use of default credentials in CISA Malcolm

0
Critical
VulnerabilityCVE-2026-90456cvecve-2026-90456cwe-1392
Published: 09/11/2026 (09/11/2026, 21:52:17 UTC)
Source: CVE Database V5
Vendor/Project: CISA
Product: Malcolm

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.

CVSS v4.0

Score 9.2critical

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
None
User Interaction
None
Vuln. Confidentiality
High
Vuln. Integrity
High
Vuln. Availability
High
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
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

Affected software

CISA

Malcolm

Affected versions
>=0 <26.06.0
GitHub Actionsmore threats →cve
Malcolm
pkg:github/Malcolm
Affected versions
>=0 <26.06.0

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 09/11/2026, 22:17:06 UTC

Technical Analysis

This vulnerability arises from the use of default credentials in the CISA Malcolm product. Specifically, an example environment-configuration file shipped with the product includes a fixed administrative password for a bundled inventory-management component. Deployments that copy this example file into active configuration without executing the setup routine to regenerate unique credentials leave the administrative interface accessible to anyone who knows the default password. This is classified under CWE-1392 (Use of Default Credentials).

Potential Impact

An attacker aware of the default administrative password can gain unauthorized administrative access to the inventory-management component of CISA Malcolm. This could lead to full control over that component, potentially compromising the confidentiality, integrity, and availability of the system. The CVSS 4.0 score is 9.2, indicating a critical severity with network attack vector, low attack complexity, no privileges required, no user interaction, and high impact on confidentiality, integrity, and availability.

Mitigation Recommendations

No official patch or fix is indicated in the provided data. The primary mitigation is to ensure that the setup routine is run during deployment to regenerate unique administrative credentials instead of using the example configuration file as-is. Administrators should verify that default credentials are not in use and replace them with secure, unique passwords.

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Technical Details

Data Version
5.2
Assigner Short Name
icscert
Date Reserved
2026-09-11T21:00:09.301Z
Cvss Version
4.0
State
PUBLISHED

Threat ID: 6aa47a7455bf5e2cf581b1a3

Added to database: 09/11/2026, 22:02:28 UTC

Last enriched: 09/11/2026, 22:17:06 UTC

Last updated: 09/12/2026, 00:01:46 UTC

Views: 13

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