CVE-2025-10285 in Simplicity Studio V6
Summary
by MITRE • 12/05/2025
The web interface of the Silicon Labs Simplicity Device Manager is exposed publicly and can be used to extract the NTLMv2 hash which an attacker could use to crack the user's domain password.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 12/05/2025
The vulnerability identified as CVE-2025-10285 represents a critical security flaw in the Silicon Labs Simplicity Device Manager web interface implementation. This device management software is widely deployed in embedded systems and IoT environments where it serves as a central management point for various silicon-based devices. The exposure of the web interface to public networks creates an attack surface that adversaries can exploit to gain unauthorized access to authentication credentials. The vulnerability specifically affects the authentication mechanism within the web interface, allowing remote attackers to intercept and extract NTLMv2 hash values without requiring valid credentials or prior authentication. This represents a significant weakness in the security architecture as the NTLMv2 hash can be used in offline password cracking attacks, potentially leading to complete domain compromise.
The technical flaw stems from improper access control mechanisms within the Simplicity Device Manager web interface. When the web interface is exposed to external networks, it fails to implement adequate authentication checks or access restrictions that would normally prevent unauthorized users from accessing sensitive authentication data. The NTLMv2 hash extraction occurs during the normal authentication process when the web interface responds to authentication requests from clients. This vulnerability is particularly concerning because NTLMv2 hashes contain sufficient information for attackers to perform password cracking operations using tools like hashcat or john the ripper. The flaw essentially allows an attacker to bypass traditional authentication mechanisms and directly obtain the cryptographic representation of user passwords, which can then be subjected to dictionary attacks or brute force attempts.
The operational impact of this vulnerability extends beyond simple credential theft and represents a significant risk to enterprise security infrastructure. Organizations using the Simplicity Device Manager in their embedded device management workflows face potential compromise of their entire domain authentication system when this vulnerability is exploited. The extracted NTLMv2 hashes can be used to perform pass-the-hash attacks, allowing attackers to move laterally within the network without needing to crack individual passwords. This vulnerability affects the principle of least privilege and can enable attackers to escalate their privileges within the network. Additionally, the widespread deployment of Silicon Labs devices across various industries including automotive, industrial control systems, and IoT environments means that the potential impact of this vulnerability could affect critical infrastructure security. The vulnerability also violates security best practices outlined in the NIST Cybersecurity Framework, particularly in the areas of identity management and access control.
Mitigation strategies for CVE-2025-10285 must address both immediate remediation and long-term security improvements. Organizations should immediately restrict network access to the Simplicity Device Manager web interface, ensuring that it is not exposed to public internet access and is only accessible through secure internal networks with proper network segmentation. Implementing firewall rules and access control lists to limit access to specific IP addresses or ranges can help prevent unauthorized access to the web interface. The device management software should be updated to the latest version provided by Silicon Labs that includes proper authentication controls and access restrictions. Network monitoring should be enhanced to detect unusual authentication patterns or hash extraction attempts that might indicate exploitation attempts. Additionally, implementing multi-factor authentication for administrative access and using secure protocols such as HTTPS with strong encryption can provide additional layers of protection. This vulnerability aligns with CWE-284 which addresses improper access control, and represents a specific implementation of the broader ATT&CK technique T1078 for valid accounts and T1566 for credential access, making it a critical target for security teams to address through both technical and procedural controls.