CVE-2025-24386 Overview
CVE-2025-24386 is an OS command injection vulnerability affecting Dell Unity storage systems running Unity Operating Environment version 5.4 and prior. The flaw stems from improper neutralization of special elements used in an operating system command [CWE-78]. A local attacker with low privileges can inject arbitrary commands, resulting in command execution and elevation of privileges on the appliance. Dell disclosed the issue in advisory DSA-2025-116 and released fixed firmware. The vulnerability carries a CVSS 3.1 base score of 7.8 and impacts confidentiality, integrity, and availability of the affected storage platform.
Critical Impact
A low-privileged local user can execute arbitrary OS commands and escalate privileges on Dell Unity, UnityVSA, and Unity XT systems running Unity OE 5.4 and prior.
Affected Products
- Dell Unity Operating Environment 5.4 and prior
- Dell UnityVSA
- Dell Unity XT
Discovery Timeline
- 2025-03-28 - CVE-2025-24386 published to the National Vulnerability Database
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-24386
Vulnerability Analysis
The vulnerability is classified as OS Command Injection under [CWE-78]. Dell Unity Operating Environment fails to properly neutralize special shell metacharacters passed into an operating system command handler. An authenticated local attacker can supply crafted input that breaks out of the intended command context and executes arbitrary commands in the underlying operating system.
Because the vulnerable command path executes with elevated privileges, successful injection results in privilege elevation beyond the attacker's original account. The attack requires local access to the Unity appliance and low privileges, but no user interaction. Full compromise of confidentiality, integrity, and availability on the storage controller is possible.
Root Cause
The root cause is missing or insufficient input sanitization in a command-processing routine within Dell Unity Operating Environment. User-controlled data is concatenated into an OS command string and passed to a shell interpreter without escaping shell metacharacters such as ;, |, &, `, and $(). This allows an attacker to append or substitute their own commands into the executed process.
Attack Vector
The attack vector is local. An attacker must authenticate to the Unity appliance with a low-privileged account, such as a service or operator account, before delivering the malicious payload. Once authenticated, the attacker submits crafted input to the vulnerable command interface. The injected command is executed by the underlying OS with the privileges of the vulnerable service, yielding privilege escalation on the storage system.
No public proof-of-concept exploit is available at this time, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. No verified exploitation code is available; refer to Dell Security Update DSA-2025-116 for technical details.
Detection Methods for CVE-2025-24386
Indicators of Compromise
- Unexpected child processes spawned by Unity management service accounts, especially shell processes such as /bin/sh, /bin/bash, or nc.
- Command-line arguments containing shell metacharacters (;, |, &&, `, $()) passed to Unity management interfaces.
- New or modified files under service user home directories or /tmp created shortly after CLI activity.
- Unexpected outbound network connections originating from the Unity appliance.
Detection Strategies
- Audit Unity CLI and service account activity for command patterns inconsistent with normal administrative workflows.
- Alert on process lineage where a Unity management binary spawns interactive shells or common post-exploitation tools.
- Correlate authentication events for low-privileged accounts with subsequent privileged process execution on the same host.
Monitoring Recommendations
- Forward Unity appliance audit logs and syslog to a centralized SIEM for retention and correlation.
- Baseline normal command execution on Unity controllers and flag deviations, particularly root-level actions initiated from non-admin sessions.
- Monitor for creation or modification of cron jobs, SSH authorized keys, and startup scripts on Unity systems.
How to Mitigate CVE-2025-24386
Immediate Actions Required
- Apply the Dell Unity firmware update referenced in DSA-2025-116 to all Unity, UnityVSA, and Unity XT systems running Unity OE 5.4 or earlier.
- Restrict local and CLI access to the Unity appliance to a minimal set of trusted administrators.
- Rotate credentials for all Unity local and service accounts after patching, particularly any low-privileged operator accounts.
- Review appliance audit logs for signs of prior command injection activity.
Patch Information
Dell has released fixed versions of Unity Operating Environment. Refer to Dell Security Update DSA-2025-116 for the specific fixed release and upgrade procedure.
Workarounds
- No official workaround is documented; upgrading to the patched Unity OE release is the required remediation.
- Until patching is complete, restrict network reachability of Unity management interfaces to a dedicated administrative network segment.
- Enforce strong authentication and disable any unused local accounts on the Unity appliance to reduce the pool of accounts able to reach the vulnerable code path.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
