CVE-2026-58571 Overview
CVE-2026-58571 is an OS Command Injection vulnerability [CWE-78] affecting Dell PowerStore. An authenticated user with limited privileges can exploit this flaw to execute arbitrary commands with root privileges on the affected system. The vulnerability requires local access and low-privileged authentication, but successful exploitation results in a scope change that impacts confidentiality, integrity, and availability of the underlying storage platform.
Critical Impact
Authenticated low-privileged users can escalate to root and execute arbitrary operating system commands on Dell PowerStore appliances, compromising the entire storage array.
Affected Products
- Dell PowerStore T
- Dell PowerStore storage appliances (see vendor advisory DSA-2026-330 for specific versions)
Discovery Timeline
- 2026-09-01 - CVE-2026-58571 published to NVD
- 2026-09-02 - Last updated in NVD database
Technical Details for CVE-2026-58571
Vulnerability Analysis
The vulnerability resides in a component of Dell PowerStore that constructs and executes operating system commands using attacker-influenced input. The affected code path fails to properly neutralize special elements passed by an authenticated user. When crafted input reaches the shell interpreter, the attacker's payload is executed with root privileges. The scope change indicates that exploitation crosses a privilege boundary, elevating a limited user account to full system control.
Dell PowerStore is an enterprise storage platform, and root-level command execution on the controller exposes tenant data, management functions, and potentially other systems that trust the array. Attackers who compromise a low-privileged administrative account, for example through phishing or credential reuse, can chain this weakness into full appliance takeover.
Root Cause
The underlying weakness is improper neutralization of special elements used in an OS command, categorized as [CWE-78]. A privileged utility or management interface accepts input from a limited user context and passes it to a shell without sufficient validation, escaping, or use of parameterized execution APIs. Because the executing process runs as root, injected commands inherit those privileges.
Attack Vector
Exploitation requires local access to the PowerStore management plane and valid credentials for a low-privileged account. The attacker submits crafted input to a vulnerable command or API that internally invokes a shell. The injected metacharacters break out of the intended command context and execute attacker-controlled payloads as root. No user interaction is required beyond the attacker's own authenticated session.
Refer to the Dell Security Update DSA-2026-330 for vendor-supplied technical details.
Detection Methods for CVE-2026-58571
Indicators of Compromise
- Unexpected shell processes (sh, bash) spawned as children of PowerStore management daemons running as root.
- Command-line arguments containing shell metacharacters such as ;, |, `, $(, or && originating from limited-privilege user sessions.
- New or modified files under root-owned directories following administrative API calls by non-root accounts.
- Outbound network connections from the PowerStore controller to unfamiliar hosts shortly after user command submissions.
Detection Strategies
- Audit PowerStore management logs for command inputs containing shell metacharacters submitted by non-administrative users.
- Correlate authenticated session activity with process execution telemetry to identify privilege transitions from limited users to root.
- Baseline normal administrative command patterns and alert on deviations, especially long argument strings or encoded payloads.
Monitoring Recommendations
- Forward PowerStore audit and syslog data to a centralized SIEM for retention and correlation.
- Monitor for repeated authentication by service or limited-privilege accounts followed by anomalous configuration changes.
- Track file integrity on PowerStore controllers for unexpected modifications to system binaries, cron entries, or SSH authorized keys.
How to Mitigate CVE-2026-58571
Immediate Actions Required
- Apply the patched PowerStore version referenced in Dell Security Update DSA-2026-330 as soon as maintenance windows allow.
- Inventory all PowerStore appliances and confirm running firmware versions against the advisory's fixed release table.
- Rotate credentials for any limited-privilege accounts on affected arrays, particularly service and integration accounts.
- Review recent audit logs for evidence of exploitation prior to patching.
Patch Information
Dell has released fixed firmware for affected PowerStore products. Consult Dell Security Update DSA-2026-330 for the exact fixed versions and upgrade procedures. Schedule upgrades using Dell-supported non-disruptive update paths where available.
Workarounds
- Restrict management-plane access to a dedicated administrative network segment reachable only from jump hosts.
- Enforce multi-factor authentication and least-privilege role assignments for all PowerStore user accounts.
- Disable or remove unused low-privilege accounts and API tokens until patching is complete.
- Monitor management interfaces closely and alert on any command submissions from non-administrative roles.
# Configuration example: restrict management interface access via network ACL
# Replace with your environment's allowed admin subnet and PowerStore management IP
iptables -A INPUT -p tcp -s 10.10.20.0/24 --dport 443 -d <powerstore-mgmt-ip> -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -d <powerstore-mgmt-ip> -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
