CVE-2026-58574 in PowerStore
Summary
by MITRE • 08/31/2026
Dell PowerStore contains a Missing Authentication for Critical Function vulnerability. An unauthenticated attacker with network access to the restricted management interface could potentially exploit this vulnerability to read internal system information from the appliance filesystem. This is a Critical vulnerability as it could expose sensitive information and credentials which allow full administrative access to the array.
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Analysis
by VulDB Data Team • 08/31/2026
The Dell PowerStore storage array contains a critical security flaw classified as Missing Authentication for Critical Function, specifically affecting its restricted management interface. This vulnerability allows an unauthenticated attacker who has network connectivity to this specific interface to bypass authentication mechanisms entirely. The core technical issue lies in the improper implementation of access controls on certain endpoints within the management plane, which are intended to be protected but instead expose sensitive internal data without requiring valid credentials or session tokens.
From a technical perspective, the flaw enables direct reading of files from the appliance filesystem by an external actor. This capability is particularly dangerous because it grants visibility into the underlying operating system and configuration structures that should remain isolated from unauthorized users. The attacker does not need to perform complex exploitation techniques such as buffer overflows or injection attacks; instead, they simply issue requests to specific API endpoints or file paths that lack proper authorization checks.
The operational impact of this vulnerability is severe due to the nature of the data exposed. By accessing internal system information and configuration files, an attacker can retrieve sensitive details including user credentials, encryption keys, and administrative tokens. This exposure effectively compromises the confidentiality and integrity of the entire storage infrastructure. With access to these credentials, a malicious actor could escalate their privileges from simple information disclosure to full administrative control over the array, potentially leading to data exfiltration, ransomware deployment, or complete service disruption.
This vulnerability aligns with CWE-306, which describes Missing Authentication for Critical Function, indicating that the software does not perform authentication before allowing access to a function that has security implications. In terms of adversary behavior, this flaw facilitates initial reconnaissance and credential harvesting as described in MITRE ATT&CK techniques such as T1505 (Server Software Component) or T1078 (Valid Accounts), depending on how the retrieved credentials are utilized. The ability to read filesystem contents also touches upon information discovery phases common in advanced persistent threat campaigns targeting enterprise storage systems.
To mitigate this risk, immediate action is required to apply vendor-provided security patches that address the authentication bypass in the management interface firmware or software components. Organizations should ensure their Dell PowerStore appliances are updated to the latest recommended version as specified by Dell Technologies Security Advisories. Additionally, network segmentation strategies should be reviewed to restrict access to the restricted management interface only from trusted administrative networks using firewalls and ACLs. Implementing multi-factor authentication for all management interfaces and regularly auditing API endpoint permissions can further reduce the attack surface associated with this type of vulnerability.