Dispatcher 3.0 Driver: Exposed IOCTL with Insufficient Access Control
CVE-2025-8061 is a high-severity exposed IOCTL with insufficient access control vulnerability in Dispatcher 3.0 Driver from Lenovo, with a CVSS 3.1 base score of 7.0 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 3.1.0.41 as the first without the flaw, so updating Dispatcher 3.0 Driver to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.43% 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 Dispatcher 3.0 Driver to 3.1.0.41 or a later version.
- Update Dispatcher 3.1 Driver to 3.1.0.41 or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Lenovo | Dispatcher 3.0 Driver | before 3.1.0.41 | 3.1.0.41 |
| Lenovo | Dispatcher 3.1 Driver | before 3.1.0.41 | 3.1.0.41 |
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
- HighSuccess depends on conditions outside the attacker's control.
- 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:H/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by CNA (lenovo.com).
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 7.3 | High | CNA (lenovo.com) |
| CVSS 3.1 | 7.0 | High | CNA (lenovo.com) |
Official description
A potential insufficient access control vulnerability was reported in the Lenovo Dispatcher 3.0 and Dispatcher 3.1 drivers used by some Lenovo consumer notebooks that could allow an authenticated local user to execute code with elevated privileges. The Lenovo Dispatcher 3.2 driver is not affected. This vulnerability does not affect systems when the Windows feature Core Isolation Memory Integrity is enabled. Lenovo systems preloaded with Windows 11 have this feature enabled by default.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Exposed IOCTL with Insufficient Access Control
The product implements an IOCTL with functionality that should be restricted, but it does not properly enforce access control for the IOCTL.
How developers prevent this class of flaw
- In Windows environments, use proper access control for the associated device or device namespace. See References.
More Exposed IOCTL with Insufficient Access Control vulnerabilities (CWE-782)
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 references
Recent Exposed IOCTL with Insufficient Access Control vulnerabilities
- 8.7 High severity
- 10.0 Critical severity
- 9.8 Critical severity
- 8.4 High severity
- 7.8 High severity
- 8.8 High severity
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