CVE-2026-26360: Dell Unisphere Path Traversal Flaw

CVE-2026-26360 Overview

CVE-2026-26360 is an External Control of File Name or Path vulnerability affecting Dell Unisphere for PowerMax version 10.2. This vulnerability allows a low privileged attacker with remote network access to exploit improper file path handling, potentially enabling the deletion of arbitrary files on the target system. The flaw stems from CWE-73 (External Control of File Name or Path), where user-controlled input is used in file operations without proper validation.

Critical Impact

A low privileged attacker with remote access can delete arbitrary files on systems running Dell Unisphere for PowerMax 10.2, potentially causing data loss, service disruption, or enabling further attacks by removing security controls.

Affected Products

• Dell Unisphere for PowerMax version 10.2
• Dell PowerMax EEM (per Dell Security Advisory DSA-2026-102)

Discovery Timeline

• 2026-02-19 - CVE-2026-26360 published to NVD
• 2026-02-19 - Last updated in NVD database

Technical Details for CVE-2026-26360

Vulnerability Analysis

This vulnerability falls under the category of External Control of File Name or Path (CWE-73), a type of input validation flaw where an application uses external input to construct a file path without proper sanitization. In the case of Dell Unisphere for PowerMax 10.2, the application fails to adequately validate or restrict user-supplied file path parameters, allowing attackers to specify paths outside of intended directories.

The attack can be executed remotely over the network and requires only low-level privileges, making it accessible to any authenticated user with network connectivity to the management interface. The vulnerability does not impact confidentiality but severely compromises both integrity and availability of the system.

Root Cause

The root cause of CVE-2026-26360 lies in insufficient input validation when processing file path parameters within Dell Unisphere for PowerMax. The application accepts user-controlled input that directly influences file system operations without implementing adequate path canonicalization, allowlist validation, or sandbox restrictions. This allows attackers to manipulate file paths using techniques such as path traversal sequences to target files outside the application's intended scope.

Attack Vector

An authenticated attacker with low privileges can exploit this vulnerability remotely over the network. The attack requires no user interaction and follows this general pattern:

1. The attacker authenticates to the Dell Unisphere for PowerMax management interface with valid low-privilege credentials
2. The attacker identifies an endpoint or function that accepts file path parameters
3. By manipulating the file path input, the attacker can specify arbitrary files on the system
4. The application processes the malicious request and deletes the specified files

The vulnerability affects the integrity and availability of the system. An attacker could delete critical configuration files, log files, or application components, leading to service disruption or enabling further exploitation by removing security controls.

Detection Methods for CVE-2026-26360

Indicators of Compromise

• Unexpected file deletions in system directories or application folders on Dell Unisphere for PowerMax servers
• Anomalous API requests or web requests containing path traversal sequences (e.g., ../, ..\\) targeting file operations
• Authentication events from low-privilege accounts followed by file system modification activities
• Application errors or service failures due to missing critical files

Detection Strategies

• Monitor web application logs for requests containing path traversal patterns targeting file management endpoints
• Implement file integrity monitoring (FIM) on critical system and application directories
• Review authentication logs for suspicious patterns of low-privilege account activity
• Deploy network-based intrusion detection rules to identify exploitation attempts

Monitoring Recommendations

• Enable comprehensive logging on Dell Unisphere for PowerMax management interfaces
• Configure alerts for unexpected file system changes on PowerMax management servers
• Monitor for authentication anomalies such as unusual login times or source IP addresses
• Implement SIEM correlation rules to detect patterns consistent with path traversal exploitation

How to Mitigate CVE-2026-26360

Immediate Actions Required

• Apply the security update provided by Dell as described in Dell Security Advisory DSA-2026-102
• Restrict network access to Dell Unisphere for PowerMax management interfaces to trusted administrative networks only
• Review and limit user accounts with access to the management interface, applying the principle of least privilege
• Enable enhanced logging and monitoring on affected systems

Patch Information

Dell has released a security update to address this vulnerability as documented in Dell Security Advisory DSA-2026-102. Organizations running Dell Unisphere for PowerMax version 10.2 should apply the patch immediately to remediate this vulnerability. Refer to the Dell advisory for specific patch versions and upgrade instructions.

Workarounds

• Implement network segmentation to isolate Dell Unisphere for PowerMax management interfaces from general user networks
• Deploy web application firewall (WAF) rules to detect and block path traversal attempts
• Restrict access to the management interface using firewall rules to limit connections to authorized administrator IP addresses only
• Conduct regular audits of user accounts with access to Unisphere and remove unnecessary privileges