CVE-2026-24511: Dell PowerScale OneFS Info Disclosure Flaw

CVE-2026-24511 Overview

Dell PowerScale OneFS contains a vulnerability where error messages generated by the system may expose sensitive information. This flaw (CWE-209: Generation of Error Message Containing Sensitive Information) allows a high-privileged attacker with local access to potentially exploit verbose error output to obtain confidential data that could be leveraged for further attacks or unauthorized access.

Critical Impact
A privileged local attacker can extract sensitive system information through improperly sanitized error messages, potentially exposing credentials, internal paths, or configuration details.

Affected Products

Dell PowerScale OneFS versions 9.5.0.0 through 9.10.1.6
Dell PowerScale OneFS versions 9.11.0.0 through 9.13.0.0

Discovery Timeline

April 8, 2026 - CVE-2026-24511 published to NVD
April 8, 2026 - Last updated in NVD database

Technical Details for CVE-2026-24511

Vulnerability Analysis

This vulnerability falls under the Information Disclosure category, specifically Error Message Information Disclosure (CWE-209). The flaw exists in how Dell PowerScale OneFS handles error conditions and generates corresponding error messages. When certain operations fail or encounter exceptional conditions, the system produces error messages that contain sensitive information that should not be exposed to users, even those with elevated privileges.

The local attack vector requires the attacker to already have access to the system, which limits the exposure compared to remotely exploitable vulnerabilities. However, the confidentiality impact is significant, as successful exploitation can lead to the disclosure of sensitive system information. This vulnerability requires no user interaction and has low attack complexity once local access is obtained.

Root Cause

The root cause of CVE-2026-24511 lies in improper error handling within the Dell PowerScale OneFS software. The application fails to properly sanitize or filter sensitive data before including it in error messages. This design flaw means that when errors occur during system operations, the generated error messages may contain:

Internal file paths and directory structures
Configuration parameters
Potentially credential fragments or tokens
System state information

This type of vulnerability typically arises when developers prioritize verbose error logging for debugging purposes without implementing proper production-level error message sanitization.

Attack Vector

The attack requires local access to the Dell PowerScale OneFS system with high privileges. An attacker in this position could:

Trigger specific error conditions through malformed requests or operations
Capture and analyze the resulting error messages
Extract sensitive information disclosed in the error output
Use the gathered information to plan further attacks or gain unauthorized access to additional resources

Since no public proof-of-concept exploits are currently available and the vulnerability is not listed in CISA's Known Exploited Vulnerabilities catalog, exploitation in the wild has not been confirmed. The technical details for crafting specific exploitation methods are documented in the Dell Security Update DSA-2026-125.

Detection Methods for CVE-2026-24511

Indicators of Compromise

Unusual patterns in system log files showing repeated error generation
Privileged user accounts accessing error logs or system diagnostic outputs at abnormal frequencies
Presence of scripts or tools designed to parse error messages for sensitive data patterns
Unexpected increases in failed operation attempts that generate verbose error outputs

Detection Strategies

Monitor system logs for patterns of repeated error conditions being triggered by the same user or process
Implement file integrity monitoring on error log files and diagnostic output locations
Review privileged user activity for anomalous access to system error messages or debug outputs
Deploy endpoint detection solutions to identify tools commonly used for log parsing and data extraction

Monitoring Recommendations

Enable detailed audit logging for privileged user activities on PowerScale OneFS systems
Configure alerts for unusual volumes of error messages being generated or accessed
Implement SIEM rules to correlate error log access with user behavior baselines
Regularly review access control lists for diagnostic and logging functions

How to Mitigate CVE-2026-24511

Immediate Actions Required

Apply the security update provided by Dell as referenced in DSA-2026-125
Review and restrict privileges for users with local access to PowerScale OneFS systems
Audit current privileged user accounts and remove unnecessary access
Enable enhanced logging to monitor for potential exploitation attempts

Patch Information

Dell has released a security update addressing this vulnerability. Organizations running affected versions of Dell PowerScale OneFS should consult the Dell Security Update DSA-2026-125 for detailed patch information and upgrade instructions. Ensure all PowerScale OneFS installations are updated to a version beyond 9.10.1.6 (for the 9.5-9.10 branch) or beyond 9.13.0.0 (for the 9.11-9.13 branch).

Workarounds

Implement strict least-privilege access controls to minimize users with high-privilege local access
Restrict access to system error logs and diagnostic outputs to only essential personnel
Configure log rotation and secure storage to limit exposure of error messages containing sensitive data
Consider network segmentation to isolate PowerScale OneFS systems from less trusted network segments

bash

# Example: Restrict access to error logs directory (adjust paths as needed)
chmod 750 /var/log/powerscale/
chown root:onefs-admins /var/log/powerscale/
# Ensure only authorized administrators can view error messages