CVE-2026-58569 Overview
Dell PowerStore contains an Inclusion of Functionality from Untrusted Control Sphere vulnerability [CWE-829]. An authenticated user with limited privileges can exploit this flaw to execute arbitrary code with root privileges on the affected storage array. The issue is local in nature but crosses a security scope boundary, allowing a low-privilege operator to compromise the underlying operating system that hosts PowerStore services.
Critical Impact
Authenticated low-privilege users can escalate to root code execution on Dell PowerStore T systems, resulting in full compromise of storage array confidentiality, integrity, and availability.
Affected Products
- Dell PowerStore T (see Dell Security Advisory DSA-2026-330 for affected versions)
- Dell PowerStore family storage arrays
- PowerStoreOS management software
Discovery Timeline
- 2026-09-01 - CVE-2026-58569 published to the National Vulnerability Database
- 2026-09-02 - Last updated in NVD database
Technical Details for CVE-2026-58569
Vulnerability Analysis
The vulnerability is classified under CWE-829: Inclusion of Functionality from Untrusted Control Sphere. Dell PowerStore incorporates functionality or resources from a source that a lower-privileged user can influence. When the privileged process loads or executes that untrusted resource, the attacker's payload runs in the root security context.
Exploitation requires authenticated local access and low privileges. No user interaction is needed. The scope changes from the constrained user context to the system context, which is why the attack impacts confidentiality, integrity, and availability of the underlying host. The EPSS model currently reflects a low probability of widespread exploitation, but the impact of a successful attack remains total system compromise.
Root Cause
The root cause is trust misplaced in a control sphere that a limited user can modify. Typical patterns for [CWE-829] on storage appliances include loading scripts, plugins, configuration files, or libraries from writable locations, executing helper binaries via unsanitized PATH lookups, or invoking commands that dereference user-controlled input during elevated operations.
Attack Vector
An attacker first authenticates to PowerStore using valid low-privilege credentials, obtained through shared operator accounts, credential reuse, or prior compromise. The attacker then places or references an untrusted resource that a privileged PowerStore component subsequently consumes. Because that component runs as root, the attacker-supplied logic executes with root privileges, yielding arbitrary code execution on the array. Refer to the Dell Security Advisory DSA-2026-330 for technical specifics.
Detection Methods for CVE-2026-58569
Indicators of Compromise
- Unexpected root-owned processes spawned shortly after authentication events by non-administrative PowerStore accounts.
- New or modified files in directories consumed by privileged PowerStore services, especially plugin, script, or configuration paths.
- Anomalous outbound connections initiated by PowerStore management components after low-privilege logins.
- Audit log entries showing privileged command execution correlated with sessions belonging to limited-privilege operators.
Detection Strategies
- Correlate PowerStore authentication logs with subsequent process execution and file modification events on the array.
- Baseline the set of binaries, libraries, and scripts loaded by root-owned PowerStore services and alert on deviations.
- Monitor for privilege boundary crossings where a session started by a limited account triggers root-context activity.
Monitoring Recommendations
- Forward PowerStore audit, authentication, and system logs to a central SIEM for retention and correlation.
- Alert on any use of local administrative or operator accounts outside documented maintenance windows.
- Track version and patch state of every PowerStore appliance to confirm remediation coverage across the fleet.
How to Mitigate CVE-2026-58569
Immediate Actions Required
- Apply the PowerStoreOS update referenced in Dell Security Advisory DSA-2026-330 as soon as validated in a change window.
- Inventory all PowerStore T appliances and confirm current PowerStoreOS versions against Dell's fixed-version list.
- Rotate credentials for all local PowerStore accounts, particularly limited-privilege operator accounts.
- Restrict management network access to PowerStore arrays to a dedicated, monitored administrative segment.
Patch Information
Dell has published remediation guidance in Dell Security Advisory DSA-2026-330. Administrators should upgrade to the fixed PowerStoreOS release identified in that advisory. No official workaround replaces the vendor patch.
Workarounds
- Limit PowerStore account provisioning to the minimum necessary personnel and enforce unique credentials per user.
- Enforce multi-factor authentication on any upstream identity provider used for PowerStore administrative access.
- Isolate PowerStore management interfaces behind jump hosts and deny direct access from general user networks.
- Increase log retention and review cadence for PowerStore audit trails until patching is complete across the fleet.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
