CVE-2026-40633 in PowerScale OneFS
Summary
by MITRE • 07/15/2026
Dell PowerScale OneFS versions 9.5.0.0 through 9.10.1.7, versions 9.11.0.0 through 9.13.0.2 contains an Insertion of Sensitive Information into Log File vulnerability. A low privileged attacker with local access could potentially exploit this vulnerability, leading to Information disclosure.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 07/15/2026
This vulnerability exists within Dell PowerScale OneFS storage systems across a range of versions from 9.5.0.0 through 9.10.1.7 and continuing through 9.11.0.0 to 9.13.0.2. The flaw represents a classic information disclosure weakness where sensitive data becomes inadvertently exposed through log file generation processes. The vulnerability is categorized under CWE-209, which specifically addresses the insertion of sensitive information into log files, making it particularly concerning for enterprise storage environments where system integrity and data protection are paramount.
The technical implementation of this vulnerability allows a low privileged local attacker to exploit the logging mechanisms within the OneFS operating system. When legitimate user processes or system functions generate log entries, certain sensitive information gets written to log files without proper sanitization or access control measures. This creates an attack surface where unauthorized local users can potentially access these log files and extract confidential data that should remain protected. The vulnerability does not require network access or elevated privileges, making it particularly dangerous as it exploits the trust model inherent in local system operations.
The operational impact of this information disclosure vulnerability extends beyond simple data exposure to encompass potential system compromise and regulatory compliance violations. Storage systems like Dell PowerScale are often deployed in environments containing highly sensitive corporate data, customer information, and proprietary assets. When log files containing authentication tokens, session identifiers, or other sensitive information become accessible to low privilege users, it creates a significant risk of credential theft, unauthorized access attempts, and potential data breaches. This vulnerability directly conflicts with security best practices outlined in the NIST Cybersecurity Framework and aligns with ATT&CK technique T1562.006 for "Impairing Security Tools" through information exposure.
Mitigation strategies should focus on implementing proper log sanitization protocols and access controls within the OneFS environment. System administrators must ensure that log files are properly configured with appropriate permissions, restricting access to authorized personnel only while maintaining audit trail integrity. The recommended approach involves configuring the logging subsystem to strip or obfuscate sensitive data before writing entries to persistent storage. Additionally, implementing regular log file monitoring and access auditing can help detect unauthorized attempts to access sensitive information within system logs. Organizations should also consider upgrading to patched versions of OneFS where Dell has addressed this specific vulnerability through proper code modifications that prevent the insertion of sensitive information into log files.