ThinOS 10: Unverified Ownership
CVE-2025-43882 is a high-severity unverified ownership vulnerability in ThinOS 10 from Dell, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. The record lists version 2508_10.0127 as the first without the flaw, so updating ThinOS 10 to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.13% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update ThinOS 10 to 2508_10.0127 or a later version.
- Update Thinos to 2508 or a later version.
- Read the advisory on dell.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Dell | ThinOS 10 | before 2508_10.0127 | 2508_10.0127 |
| Dell | Thinos | before 2508 | 2508 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by CNA (emc.com).
Official description
Dell ThinOS 10, versions prior to 2508_10.0127, contains an Unverified Ownership vulnerability. A local low-privileged attacker could potentially exploit this vulnerability leading to Unauthorized Access.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Unverified Ownership
The product does not properly verify that a critical resource is owned by the proper entity.
How developers prevent this class of flaw
- Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
- Consider following the principle of separation of privilege. Require multiple conditions to be met before permitting access to a system resource.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in ThinOS 10
- 8.3 High severity
- 8.6 High severity
- 7.2 High severity
- 9.8 Critical severity
- 8.8 High severity
- 9.4 Critical severity
Recent Unverified Ownership vulnerabilities
- 7.2 High severity
Spotted an error? Tell us.