CVE-2026-79685 Overview
CVE-2026-79685 is an argument injection vulnerability [CWE-88] affecting Dell PowerStore storage systems. An authenticated user with limited privileges can exploit the flaw to gain unauthorized access to sensitive system information. Dell disclosed the issue in security advisory DSA-2026-330 alongside other PowerStore vulnerabilities.
The vulnerability requires network access and low-privileged authentication, with no user interaction needed. Successful exploitation impacts confidentiality of the storage platform without affecting integrity or availability of stored data.
Critical Impact
An authenticated low-privileged attacker with network access to a Dell PowerStore management interface can inject crafted arguments to disclose sensitive system information.
Affected Products
- Dell PowerStore T
- Refer to Dell advisory DSA-2026-330 for the complete list of affected PowerStore versions
Discovery Timeline
- 2026-09-01 - CVE-2026-79685 published to the National Vulnerability Database (NVD)
- 2026-09-01 - Last updated in NVD database
Technical Details for CVE-2026-79685
Vulnerability Analysis
CVE-2026-79685 is classified as Improper Neutralization of Argument Delimiters in a Command, commonly known as argument injection [CWE-88]. The flaw resides in a PowerStore component that accepts user-controlled input and passes it to an underlying command or subprocess without sufficient sanitization of argument delimiters.
When the vulnerable handler constructs a command line, attacker-controlled input can introduce additional flags or options that alter the intended behavior of the invoked program. This differs from full command injection because the attacker cannot introduce arbitrary commands, but can influence how an existing command executes.
The attack requires authentication with limited privileges, which lowers the exploitation barrier for insider threats or attackers who have already obtained low-privileged credentials through phishing or credential reuse. Impact is limited to information disclosure, with no reported integrity or availability effects.
Root Cause
The root cause is insufficient validation of characters used to separate arguments in a command invocation. The vulnerable code path accepts user-supplied values and concatenates them into a command string or argument array without filtering delimiter characters such as -, --, or whitespace-separated flags.
Attack Vector
The attack vector is network-based. An authenticated user submits crafted input containing additional command-line arguments through a PowerStore management interface. The backend passes the input to a utility that interprets the injected flags, causing the utility to expose sensitive system data in its output or logs.
No public proof-of-concept exploit has been released for CVE-2026-79685, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. See the Dell Security Update DSA-2026-330 for vendor technical details.
Detection Methods for CVE-2026-79685
Indicators of Compromise
- Unexpected command-line arguments or flags appearing in PowerStore application, audit, or subprocess logs.
- Authenticated API or CLI requests from low-privileged accounts containing delimiter characters such as --, -, or embedded whitespace in input fields.
- Anomalous read access to system configuration files, diagnostic bundles, or log outputs by non-administrative user accounts.
Detection Strategies
- Review PowerStore audit logs for administrative or diagnostic commands invoked with atypical argument patterns by non-privileged users.
- Compare request payloads against expected schemas and alert on input fields containing shell metacharacters or argument-delimiter sequences.
- Correlate authentication events for limited-privilege accounts with subsequent access to sensitive endpoints normally restricted to administrators.
Monitoring Recommendations
- Forward PowerStore management, API, and audit logs to a centralized SIEM for retention and behavioral analysis.
- Baseline normal command patterns issued by service and low-privileged accounts, then alert on deviations.
- Monitor for repeated failed input validation errors, which may indicate an attacker probing for injection points.
How to Mitigate CVE-2026-79685
Immediate Actions Required
- Apply the security update referenced in Dell advisory DSA-2026-330 to all affected PowerStore systems.
- Inventory PowerStore appliances and verify the running version against Dell's fixed release list.
- Rotate credentials for any low-privileged accounts with access to PowerStore management interfaces if suspicious activity is observed.
Patch Information
Dell has released fixed firmware and software for affected PowerStore products. Refer to the Dell Security Update DSA-2026-330 for specific versions, upgrade paths, and remediation guidance.
Workarounds
- Restrict network access to PowerStore management interfaces using firewall rules and management VLAN segmentation.
- Enforce least-privilege on PowerStore role assignments and remove unnecessary low-privileged accounts.
- Enable multi-factor authentication on administrative accounts to limit the value of stolen or reused credentials.
- Continuously review Dell's advisory for updated mitigation guidance until patching is complete.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.