# CVE-2026-40633: Dell PowerScale OneFS sensitive information disclosure in log files

Source: https://junglewise.ai/threats/cve-2026-40633-dell-powerscale-onefs-sensitive-information-disclosure-in-log  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-15. Updated: 2026-07-15  
License: CC BY 4.0 with a link back

CVE-2026-40633 · Severity: high · CVSS 7.8 · Published 2026-07-15

Dell PowerScale OneFS, the operating system used for high-performance scale-out storage, is affected by a security vulnerability where sensitive information is improperly recorded in system log files. A user with low-level access to the system could read these logs to discover confidential data, potentially leading to further unauthorized access or data exposure. Dell has released security updates to address this issue and recommends upgrading to a remediated version.

Technologies: [Dell PowerScale OneFS](https://junglewise.ai/threats/technologies/powerscale-onefs). Vendors: [Dell](https://junglewise.ai/threats/vendors/dell).

## Quick answers

**Is CVE-2026-40633 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-40633 being exploited in the wild.

**How severe is CVE-2026-40633?** High severity, with a CVSS score of 7.8, published 15 July 2026.

**Which products and versions are affected?** Dell PowerScale OneFS 9.5.0.0 through 9.10.1.7, 9.11.0.0 through 9.13.0.2.

**Is there a fix for CVE-2026-40633?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-40633 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2026-40633?** Check whether you run Dell PowerScale OneFS at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

This vulnerability (CWE-532) exists in Dell PowerScale OneFS due to the improper insertion of sensitive information into system log files. A local attacker with low privileges (PR:L) can exploit this by accessing and reading these log files, leading to the disclosure of sensitive system or user information. The vulnerability affects multiple branches of OneFS, specifically versions 9.5.0.0 through 9.10.1.7 and 9.11.0.0 through 9.13.0.2. Dell has released patches in versions 9.10.1.8 and 9.13.1.0. As a mitigation, Dell recommends configuring non-root users to use the OneFS restricted shell.

## Affected products

- Dell PowerScale OneFS 9.5.0.0 through 9.10.1.7, 9.11.0.0 through 9.13.0.2

## Timeline

- 2026-06-30: advisory: Initial Dell advisory release
- 2026-07-15: disclosed: NVD publication date

## References

- [https://www.dell.com/support/kbdoc/en-us/000483600/dsa-2026-261-security-update-for-dell-powerscale-onefs-multiple-vulnerabilities](https://www.dell.com/support/kbdoc/en-us/000483600/dsa-2026-261-security-update-for-dell-powerscale-onefs-multiple-vulnerabilities)

## Related threats

- [Dell PowerScale OneFS command injection privilege escalation](https://junglewise.ai/threats/cve-2026-70425-dell-powerscale-onefs-command-injection-privilege-escalation)
- [Dell PowerScale OneFS incorrect authorization in system logs](https://junglewise.ai/threats/cve-2026-46460-dell-powerscale-onefs-incorrect-authorization-in-system-logs)
- [Dell PowerScale OneFS insecure temporary file vulnerability](https://junglewise.ai/threats/cve-2026-40635-dell-powerscale-onefs-insecure-temporary-file-vulnerability)
- [Dell PowerScale OneFS privilege escalation](https://junglewise.ai/threats/cve-2026-49501-dell-powerscale-onefs-privilege-escalation)
- [Dell PowerScale OneFS versions 9.5.0.0 through 9.5.1.6, 9.6.0.0 through 9.7.1.13, 9.8.0.0 through 9.10.1.5 and…](https://junglewise.ai/threats/cve-2026-32803-dell-powerscale-onefs-versions-9-5-0-0-through-9-5-1-6-9-6-0-0)