CVE-2026-75960 in Smart Home
Summary
by MITRE • 08/26/2026
Rently Smart Home versions 20.1.0 and prior are vulnerable to an Insufficiently Protected Credentials vulnerability. This could allow an attacker to retrieve pins including the Master Pin, overriding standard user permissions.
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Analysis
by VulDB Data Team • 08/26/2026
The Rently Smart Home application, specifically in version 20.1.0 and earlier releases, contains a critical security flaw classified as insufficient protection of credentials. This vulnerability stems from inadequate safeguards surrounding sensitive authentication data stored or transmitted by the mobile client. In modern smart home ecosystems, applications serve as the primary interface for controlling physical access points such as door locks, alarm systems, and surveillance devices. Consequently, the integrity of credential storage is paramount to maintaining system security. The identified flaw indicates that PIN codes, which are essential for authorizing actions within the application, are not sufficiently encrypted or protected against unauthorized extraction. This lack of robust cryptographic implementation allows malicious actors with physical access to the device or those who have achieved code execution privileges on the compromised mobile platform to extract these credentials directly from memory or local storage files.
The technical nature of this vulnerability aligns closely with CWE-522, which describes Insufficiently Protected Credentials in stored data. When an application fails to properly encrypt sensitive information such as PINs before writing them to disk or storing them in insecure shared preferences, it creates a direct pathway for credential theft. In the context of mobile operating systems like Android and iOS, while sandboxing provides some isolation between applications, vulnerabilities within the app itself can bypass these protections if they rely on weak storage mechanisms or fail to utilize platform-specific secure enclaves effectively. The extraction process typically involves reverse engineering the application binary or analyzing runtime memory dumps to locate plaintext representations of user PINs. This is particularly dangerous because smart home devices often use static PINs for local authentication, meaning that once a PIN is compromised, it remains valid until manually changed by an authorized administrator, providing attackers with persistent access.
The operational impact of this vulnerability is severe due to the potential for privilege escalation and unauthorized physical access. By retrieving pins including the Master Pin, an attacker can override standard user permissions assigned to individual family members or guests. The Master Pin typically holds administrative privileges, allowing full control over system settings, addition or removal of users, and configuration of security zones. If this credential is exposed, it effectively neutralizes the multi-user permission structure designed into the Rently ecosystem. An adversary could use these stolen credentials to disarm alarms, unlock doors for unauthorized entry, or disable surveillance recording capabilities without detection by legitimate owners. This transforms a digital vulnerability into a tangible physical security risk, potentially leading to burglary, vandalism, or personal safety threats for residents relying on the smart home system for protection.
This scenario also reflects tactics observed in the MITRE ATT&CK framework, specifically relating to Credential Access and Defense Evasion techniques such as Unsecured Credentials (T1552) and Local Data Stealing (T1005). Attackers often target mobile applications because they are frequently carried into high-value physical environments. The ability to extract credentials from a smartphone allows for lateral movement if those same PINs or associated account tokens are reused across other services, although in this specific case the primary impact is confined to the smart home infrastructure. The lack of rate limiting or anomaly detection on local pin entry attempts further exacerbates the risk, as attackers can brute-force remaining unknown pins using the extracted data patterns or simply use the stolen Master Pin directly without triggering remote alerts if the system relies solely on local validation for certain actions.
Mitigation strategies must focus on immediate remediation and long-term architectural improvements. Users of Rently Smart Home versions 20.1.0 and prior should update to the latest patched version immediately, as this vulnerability has likely been addressed in subsequent releases through improved cryptographic standards. For organizations or individuals unable to upgrade instantly, it is critical to change all PINs, especially the Master Pin, on every connected device within the ecosystem. This ensures that even if credentials were previously extracted by an attacker, they are rendered useless upon rotation. Additionally, enabling any available multi-factor authentication features provided by the application can add a layer of defense beyond static PINs. Developers must implement secure storage practices such as using hardware-backed keystore systems to encrypt sensitive data at rest and ensuring that no plaintext secrets remain in memory longer than necessary during runtime operations. Regular security audits and penetration testing focused on mobile credential handling are essential to prevent similar vulnerabilities from re-emerging in future updates.