CVE-2026-90457

Published Sep 11, 2026 CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Description
The administrative password is hashed using a comparatively weak, fast algorithm for the credential store backing one authentication path, and the file containing that hash is written with permissions allowing it to be read by any local user. This is inconsistent with a separate, stronger hashing algorithm used for the same password on another authentication path. A party able to read this file, including a local user or a party with access to a configuration backup, could feasibly recover the underlying password through offline computation, compromising the administrative credential across every path that accepts it.

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

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
References
Metrics cvssV3_1

{'score': 6.2, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

Type Values Removed Values Added
Title Weak Hashing and World-Readable Credential File Enable Admin Password Theft
Type Values Removed Values Added
Title Weak Hashing and World-Readable Credential File Enable Admin Password Theft
Type Values Removed Values Added
Title Weak hashing and insecure file permissions enable administrative credential compromise
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Weak hashing and insecure file permissions enable administrative credential compromise
Type Values Removed Values Added
Title Weak Password Hashing and File Permissions Permit Local Administrative Credential Theft
Type Values Removed Values Added
First Time appeared Cisagov
Cisagov malcolm
Vendors & Products Cisagov
Cisagov malcolm
Type Values Removed Values Added
Title Weak Password Hashing and File Permissions Permit Local Administrative Credential Theft
Type Values Removed Values Added
Title Administrative Password Hashing Weakness with Insecure File Permissions in Malcolm
Type Values Removed Values Added
Title Administrative Password Hashing Weakness with Insecure File Permissions in Malcolm
Type Values Removed Values Added
Title Weak Hashing and File Permission Vulnerability in Malcolm
Type Values Removed Values Added
Title Weak Hashing and File Permission Vulnerability in Malcolm
Type Values Removed Values Added
Description The administrative password is hashed using a comparatively weak, fast algorithm for the credential store backing one authentication path, and the file containing that hash is written with permissions allowing it to be read by any local user. This is inconsistent with a separate, stronger hashing algorithm used for the same password on another authentication path. A party able to read this file, including a local user or a party with access to a configuration backup, could feasibly recover the underlying password through offline computation, compromising the administrative credential across every path that accepts it.
Weaknesses CWE-916
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
icscert
Published
Updated
Oct 2, 2026, 8:43 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