Critical Dell PowerScale OneFS Vulnerabilities Expose Enterprise Storage to Complete System Takeover

Enterprise storage infrastructure is under severe threat as Dell Technologies has issued a critical security advisory addressing multiple vulnerabilities in PowerScale OneFS that could allow attackers to completely compromise affected systems. The most severe vulnerability carries a CVSS score of 9.8, indicating critical risk that requires immediate attention from system administrators.

 Description of the Vulnerabilities

Dell PowerScale OneFS is affected by six separate vulnerabilities ranging from critical to low severity. The enterprise storage platform, which manages unstructured data across multiple nodes, faces unprecedented security risks that expose entire storage infrastructures to compromise.

The primary threat comes from CVE-2025-27690, a use of default password vulnerability that affects PowerScale OneFS versions 9.5.0.0 through 9.10.1.0. This critical flaw allows unauthenticated attackers with remote access to take over high-privileged user accounts without any authentication barriers.

Additional vulnerabilities include CVE-2025-26330 (incorrect authorization), CVE-2025-22471 (integer overflow), CVE-2025-26480 (uncontrolled resource consumption), CVE-2025-23378 (information exposure), and CVE-2025-26479 (out-of-bounds write). Each vulnerability presents different attack vectors and potential impacts on enterprise storage operations.

 Severity Assessment

The most alarming vulnerability (CVE-2025-27690) affects PowerScale OneFS versions 9.5.0.0 through 9.10.1.0 and involves a use of default password vulnerability with a CVSS score of 9.8. This critical rating reflects the ease of exploitation and the devastating potential impact on enterprise storage infrastructure.

The remaining vulnerabilities range from high to low severity:

• CVE-2025-26330: CVSS 7.0 (High)
• CVE-2025-22471: CVSS 6.5 (Medium)
• CVE-2025-26480: CVSS 5.3 (Medium)
• CVE-2025-23378: CVSS 3.3 (Low)
• CVE-2025-26479: CVSS 3.1 (Low)

The cumulative effect of these vulnerabilities creates a perfect storm for attackers targeting enterprise storage environments.

 Exploitation Methods

The most severe flaw allows for direct authentication bypass: Remote attacker targets exposed PowerScale OneFS management interface, exploitation of CVE-2025-27690 grants access to high-privileged accounts, attacker gains system-level control of storage infrastructure.

Attackers can exploit these vulnerabilities through multiple attack vectors. The critical CVE-2025-27690 requires no authentication and can be exploited remotely, making it particularly dangerous for internet-facing storage systems. The default password vulnerability allows attackers to bypass all security controls and assume administrative privileges.

Secondary vulnerabilities provide additional attack pathways. CVE-2025-26330 enables privilege escalation through disabled user accounts, while CVE-2025-22471 and CVE-2025-26480 can be leveraged for denial of service attacks that disrupt storage operations.

The combination of remote accessibility and high privileges makes these vulnerabilities extremely attractive to cybercriminals seeking to compromise enterprise data storage systems.

 Organizations at Risk

Any organization utilizing Dell PowerScale OneFS versions 9.4.0.0 through 9.10.1.0 faces immediate risk. The security update addresses six vulnerabilities of varying severity levels affecting PowerScale OneFS versions 9.4.0.0 through 9.10.1.0. This includes:

• Healthcare systems storing patient data
• Financial institutions managing transaction records
• Government agencies handling sensitive information
• Educational institutions with student records
• Manufacturing companies with proprietary data
• Media companies with valuable content libraries

Small and medium-sized businesses using PowerScale for data consolidation face particular risk due to limited security resources and delayed patching cycles. Organizations with internet-facing storage management interfaces are at heightened risk of immediate exploitation.

 Remediation Steps

Dell Technologies has released updated versions to address these vulnerabilities: For most vulnerabilities: Update to version 9.10.1.1 or later, which Dell recommends as part of their Long-Term Support (LTS) 2025 version.

Immediate remediation requires updating to patched versions:

• Version 9.4.0.0 through 9.4.0.20: Update to version 9.4.0.21 or later
• Version 9.5.0.0 through 9.5.1.2: Update to version 9.5.1.3 or later
• Version 9.7.0.0 through 9.7.1.4: Update to version 9.7.1.5 or later
• All other affected versions: Update to version 9.10.1.1 or later

For organizations unable to immediately apply the updates, Dell has provided several temporary workarounds specifically for the most critical vulnerability (CVE-2025-27690) including adding impacted users to protected lists, resetting passwords, and disabling web interfaces.

Organizations should prioritize patching internet-facing systems and implement network segmentation to limit exposure. Regular security assessments and vulnerability scanning help identify and address future threats.

 How CinchOps Can Help Secure Your Business

At CinchOps, we understand the critical nature of enterprise storage security and the devastating impact vulnerabilities like the Dell PowerScale flaws can have on your business operations. Our experienced team has been protecting businesses from evolving cyber threats for over three decades, giving us the expertise to navigate complex security challenges when time is of the essence.

Our comprehensive security services specifically address enterprise storage vulnerabilities and include:

• Emergency Vulnerability Assessment and Patch Management: When critical vulnerabilities are announced, we immediately assess your environment to identify affected systems and coordinate secure patching with minimal business disruption
• 24/7 Security Monitoring and Threat Detection: Our Security Operations Center continuously monitors for exploitation attempts and deploys advanced detection systems to identify attack patterns before systems are compromised
• Network Segmentation and Access Controls: We implement sophisticated controls that limit lateral movement and isolate storage management interfaces from unauthorized access
• Backup and Disaster Recovery Solutions: We design robust backup strategies with isolated environments that remain secure even if primary storage systems are compromised
• Proactive Security Audits and Penetration Testing: Regular assessments identify vulnerabilities before they become public, with specific focus on storage systems and management interfaces
• Incident Response Planning and Execution: Pre-planned response procedures ensure rapid containment and recovery operations that minimize business impact during security incidents
• Employee Security Training: Ongoing training helps staff recognize attack methods that target networks housing critical storage infrastructure
• Vendor Risk Management: We maintain relationships with technology vendors and monitor security advisories to ensure timely threat intelligence and remediation guidance

Don’t let critical vulnerabilities like these Dell PowerScale flaws put your business at risk. Contact CinchOps today to schedule a comprehensive security assessment and learn how our managed IT and cybersecurity services can protect your organization from current and emerging threats.

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Discover related topics: Critical Dell PowerScale OneFS Vulnerability: Default Password Exposes High-Privileged Accounts
For Additional Information on this topic: Security Update for Dell PowerScale OneFS for Multiple Security Vulnerabilities

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