CVE-2025-46691 Overview
CVE-2025-46691 is an Improper Access Control vulnerability [CWE-284] in the Dell PremierColor Panel Driver. Versions prior to 1.0.0.1 A01 are affected. A low-privileged local attacker can exploit this flaw to escalate privileges on the host system.
The vulnerability impacts confidentiality, integrity, and availability. Exploitation requires local access and low privileges but no user interaction. Dell published advisory DSA-2025-444 to address the issue.
Critical Impact
A local attacker with standard user privileges can achieve Elevation of Privileges on systems running vulnerable versions of the Dell PremierColor Panel Driver.
Affected Products
- Dell PremierColor Panel Driver versions prior to 1.0.0.1 A01
- Systems with Dell PremierColor software installed
- Windows endpoints using Dell-supported color calibration drivers
Discovery Timeline
- 2026-01-28 - CVE-2025-46691 published to NVD
- 2026-03-09 - Last updated in NVD database
Technical Details for CVE-2025-46691
Vulnerability Analysis
The Dell PremierColor Panel Driver contains an Improper Access Control weakness classified under [CWE-284]. The driver fails to enforce adequate permission checks on privileged operations exposed to local users. An attacker authenticated as a standard user can interact with the driver to perform actions intended for higher-privileged contexts.
The attack surface is local. No network access is required, and user interaction is not necessary to complete exploitation. Successful exploitation results in code execution or resource access at elevated privilege levels.
Root Cause
The root cause is insufficient access control enforcement within the PremierColor Panel Driver. The driver exposes functionality that should be restricted to administrative users but does not validate the calling context. This permits unauthorized callers to invoke privileged routines.
Driver-level vulnerabilities of this class typically stem from missing or weak Access Control List (ACL) checks on device objects, IOCTL handlers, or shared resources. The vendor advisory confirms the issue resides in versions prior to 1.0.0.1 A01.
Attack Vector
Exploitation requires local access to a Windows host running the vulnerable driver. An attacker with low-privileged credentials interacts with the driver interface to trigger the access control bypass. The result is elevation to a higher privilege context, including potential SYSTEM-level execution.
Local Privilege Escalation (LPE) vulnerabilities in vendor-supplied drivers are common post-exploitation targets. Attackers chain these flaws with initial access techniques such as phishing or credential theft to gain full host control.
No public proof-of-concept exploit is available at the time of publication. Dell's security advisory DSA-2025-444 documents the issue and provides remediation guidance.
Detection Methods for CVE-2025-46691
Indicators of Compromise
- Unexpected child processes spawned by Dell PremierColor driver components running with SYSTEM privileges
- Anomalous IOCTL calls targeting the PremierColor driver device object from non-administrative user contexts
- New service installations, scheduled tasks, or registry persistence created shortly after PremierColor driver interaction
Detection Strategies
- Inventory endpoints running Dell PremierColor and identify driver versions below 1.0.0.1 A01
- Monitor for privilege escalation patterns where a low-privileged process transitions to SYSTEM context via driver interaction
- Audit Windows Security Event logs for 4672 (special privileges assigned) events correlated with PremierColor driver activity
Monitoring Recommendations
- Enable kernel driver telemetry and device object access logging on hosts with PremierColor installed
- Track process lineage to identify suspicious parent-child relationships originating from Dell color calibration utilities
- Alert on creation of administrative accounts or modification of privileged group membership following driver activity
How to Mitigate CVE-2025-46691
Immediate Actions Required
- Update the Dell PremierColor Panel Driver to version 1.0.0.1 A01 or later on all affected endpoints
- Identify systems with the vulnerable driver installed and prioritize patching based on user privilege exposure
- Restrict interactive logon to PremierColor-equipped workstations to trusted users until patching is complete
Patch Information
Dell has released a fixed version of the PremierColor Panel Driver. Administrators should download and deploy version 1.0.0.1 A01 or later. Refer to the Dell Security Advisory DSA-2025-444 for download links and detailed remediation instructions.
Workarounds
- Uninstall the Dell PremierColor Panel Driver on systems that do not require color calibration functionality
- Apply principle of least privilege and remove unnecessary local user accounts from affected workstations
- Enforce application allowlisting to prevent unauthorized binaries from interacting with the vulnerable driver
# Verify installed Dell PremierColor driver version on Windows
Get-WmiObject Win32_PnPSignedDriver | Where-Object {$_.DeviceName -like "*PremierColor*"} | Select-Object DeviceName, DriverVersion
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
