Introduction
Attackers can bypass hardware-based security controls on Dell business laptops through a hard-coded password in the ControlVault3 driver, and then perform privileged operations without authorization. The flaw affects credential storage, biometric authentication, and cryptographic key management on affected systems. The consequences are serious for enterprise and government environments.
Dell Technologies is one of the world's largest PC manufacturers, with a strong presence in the enterprise and government sectors. The ControlVault3 platform is widely deployed in the Latitude and Precision laptop lines and provides hardware-backed security for millions of devices. Organizations that use Dell endpoints for sensitive operations depend on this subsystem being secure and reliable.
Technical Information
CVE-2025-31649 arises from a hard-coded password or authentication bypass in the ControlVault WBDI (Windows Biometric Device Interface) Driver. The WBDI driver mediates access between the Windows operating system and the ControlVault hardware security subsystem, which manages fingerprint sensors, smart card readers, and cryptographic storage.
In affected versions, the driver does not properly validate authentication credentials for privileged API calls. An attacker can craft specific ControlVault API requests that the driver accepts without the correct credentials. This lets local attackers:
- Execute privileged firmware operations
- Extract cryptographic keys or biometric templates from the secure enclave
- Modify firmware or biometric data
Any local user can trigger the vulnerability, not only administrators, so shared and multi-user environments carry more risk. The root cause is improper credential validation, which violates least privilege and secure design principles. The flaw is one of several issues disclosed in the "ReVault" research, which found that multiple vulnerabilities in ControlVault firmware and APIs can be chained for advanced attacks. No public code snippets are available for this CVE.
Affected Systems and Versions
- Dell ControlVault3 WBDI Driver versions prior to 5.15.14.19
- Dell ControlVault3 Plus WBDI Driver versions prior to 6.2.36.47
These drivers ship on a wide range of Dell Latitude and Precision laptops. If the ControlVault device is present and active, a system running an affected version is vulnerable regardless of configuration.
Vendor Security History
Dell has had earlier security issues in firmware and drivers, including other vulnerabilities in the ControlVault platform. The "ReVault" research disclosed multiple related flaws in 2025, and Dell responded with a coordinated patch rollout and public advisories. Dell maintains a security advisory portal and publishes detailed remediation guidance, but has been criticized in some cases for staggered patch releases and communication delays.
