CVE-2025-21056 in Retail Mode
Summary
by MITRE • 09/25/2025
Improper input validation in Retail Mode prior to version 5.59.4 allows self attackers to execute privileged commands on their own devices.
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Analysis
by VulDB Data Team • 09/27/2025
The vulnerability identified as CVE-2025-21056 represents a critical weakness in the retail mode functionality of a software system, specifically affecting versions prior to 5.59.4. This issue stems from inadequate input validation mechanisms that fail to properly sanitize or verify user-provided data within the retail mode environment. The flaw creates a path for privilege escalation attacks where malicious actors can potentially execute commands with elevated privileges on their own devices, effectively bypassing intended security restrictions. Retail mode is typically designed to provide a restricted user environment with limited access to system resources and administrative functions, making this vulnerability particularly concerning as it undermines the fundamental security model of the system.
The technical implementation of this vulnerability manifests through insufficient validation of input parameters that are processed within the retail mode context. When users interact with retail mode applications or services, the system should enforce strict input sanitization to prevent malicious data from being interpreted as executable commands. However, the flawed validation logic allows specially crafted inputs to be processed without proper security checks, enabling attackers to inject and execute privileged commands. This type of vulnerability aligns with CWE-20, which describes improper input validation as a common weakness that can lead to various security issues including command injection, privilege escalation, and unauthorized system access. The vulnerability operates at the intersection of input handling and privilege management, creating a dangerous scenario where legitimate retail mode users can be exploited to gain elevated access rights.
The operational impact of CVE-2025-21056 extends beyond simple privilege escalation as it fundamentally compromises the security posture of devices running affected software versions. In retail environments where devices may be accessed by multiple users or where unauthorized access could result in significant financial loss, this vulnerability creates a substantial risk. Attackers who successfully exploit this flaw can execute commands with administrative privileges, potentially leading to data theft, system modification, or complete device compromise. The self-attacker model implies that the vulnerability can be exploited by users who already have access to the device, making it particularly dangerous in scenarios where physical access or legitimate user credentials are compromised. This vulnerability directly impacts the principle of least privilege and can enable lateral movement within networked retail systems where multiple devices may be running the affected software.
Mitigation strategies for CVE-2025-21056 should prioritize immediate software updates to version 5.59.4 or later, which contains the necessary patches to address the input validation flaws. Organizations should implement comprehensive patch management procedures to ensure all retail mode devices are updated promptly. Additional defensive measures include enhanced monitoring of system logs for unusual command execution patterns, implementation of network segmentation to limit the potential impact of exploitation, and regular security assessments of retail mode configurations. Security teams should also consider implementing application whitelisting policies that restrict which commands can be executed within retail mode environments. From an ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation and command execution, with potential implications for lateral movement and persistence within retail environments. Organizations should conduct thorough risk assessments to identify all systems running affected software versions and establish incident response procedures specifically addressing this type of privilege escalation vulnerability.