CVE-2026-90457: CWE-916 Use of password hash with insufficient computational effort in CISA Malcolm
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.
AI Analysis
Technical Summary
The vulnerability arises because the administrative password in CISA Malcolm is stored using a comparatively weak and fast hashing algorithm in one credential store, and the file containing this hash is accessible to any local user due to permissive file permissions. This is inconsistent with a stronger hashing algorithm used for the same password on another authentication path. An adversary able to read this hash file, including local users or those with access to configuration backups, could perform offline computations to recover the underlying password, thereby compromising administrative credentials across all authentication paths that accept this password.
Potential Impact
An attacker with local system access or access to configuration backups can obtain the weakly hashed password file and potentially recover the administrative password through offline attacks. This compromises administrative credentials across all authentication paths that accept the password, potentially allowing unauthorized administrative access.
Mitigation Recommendations
No patch or official fix is currently documented for this vulnerability. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict local file access permissions to prevent unauthorized reading of the password hash file and secure configuration backups to limit exposure.
CVE-2026-90457: CWE-916 Use of password hash with insufficient computational effort in CISA Malcolm
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.
CVSS v4.0
Score 6.9medium
Affected software
CISA
Malcolm
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability arises because the administrative password in CISA Malcolm is stored using a comparatively weak and fast hashing algorithm in one credential store, and the file containing this hash is accessible to any local user due to permissive file permissions. This is inconsistent with a stronger hashing algorithm used for the same password on another authentication path. An adversary able to read this hash file, including local users or those with access to configuration backups, could perform offline computations to recover the underlying password, thereby compromising administrative credentials across all authentication paths that accept this password.
Potential Impact
An attacker with local system access or access to configuration backups can obtain the weakly hashed password file and potentially recover the administrative password through offline attacks. This compromises administrative credentials across all authentication paths that accept the password, potentially allowing unauthorized administrative access.
Mitigation Recommendations
No patch or official fix is currently documented for this vulnerability. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict local file access permissions to prevent unauthorized reading of the password hash file and secure configuration backups to limit exposure.
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: 6aa47a7455bf5e2cf581b1a4
Added to database: 09/11/2026, 22:02:28 UTC
Last enriched: 09/11/2026, 22:17:50 UTC
Last updated: 09/11/2026, 22:56:33 UTC
Views: 4
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.