CVE-2026-21117 in Samsung
Summary
by MITRE • 10/12/2026
Improper access control in CocktailBarService prior to SMR Oct-2026 Release 1 allows local attackers to access sensitive information.
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Analysis
by VulDB Data Team • 10/12/2026
The vulnerability identified within the CocktailBarService component, specifically affecting versions prior to the SMR October 2026 Release 1 update, represents a critical failure in implementing proper access control mechanisms. This flaw stems from an insufficient verification of user privileges when handling requests directed at sensitive internal services or data stores. In secure software architecture, every interaction with protected resources must be rigorously authenticated and authorized to ensure that only entities with explicit permission can retrieve or modify specific information. The absence of these checks in the CocktailBarService allows any local process or user account on the system to bypass intended security boundaries. This type of misconfiguration is a classic example of an authorization failure where the software does not enforce restrictions on authenticated users regarding what data they are allowed to access, leading directly to unauthorized disclosure of sensitive information that was never meant to be exposed to lower-privileged contexts.
From a technical perspective, this improper access control likely manifests as an insecure direct object reference or a broken function level authorization issue within the service's API endpoints or internal communication channels. Local attackers can exploit this by crafting specific requests that target internal identifiers or administrative functions without providing valid credentials or possessing the necessary role-based permissions. Because the vulnerability is accessible to local actors, it implies that any application running on the same host with even minimal execution privileges can probe and extract data from the CocktailBarService. This creates a significant lateral movement risk within an environment where multiple services coexist, as compromising one service through this flaw could provide the attacker with insights into other connected systems or sensitive configuration details stored by the service.
The operational impact of this vulnerability is substantial, particularly in environments where confidentiality and integrity are paramount. The exposure of sensitive information can range from internal network topology maps to user credentials, session tokens, or proprietary business logic embedded within the service's data structures. If the CocktailBarService handles authentication tokens or configuration secrets for other applications, an attacker could leverage this access to escalate privileges further, potentially achieving full system compromise. In industrial control systems or critical infrastructure environments where such services are often deployed, the leakage of operational parameters can disrupt normal operations or provide adversaries with the intelligence needed to plan more sophisticated attacks against physical assets. The lack of immediate detection mechanisms for local data exfiltration exacerbates this risk, allowing attackers to remain undetected while harvesting valuable information over an extended period.
To mitigate this vulnerability, organizations must prioritize applying the SMR October 2026 Release 1 update or later, which addresses these access control deficiencies by enforcing strict role-based access controls and validating user permissions before processing requests against sensitive resources. In environments where immediate patching is not feasible due to operational constraints, temporary mitigations should include restricting local network connectivity to the service if possible, implementing host-based firewalls to limit inbound connections from untrusted local processes, and enabling comprehensive audit logging to detect anomalous access patterns indicative of exploitation attempts. Furthermore, developers should adopt a principle of least privilege across all microservices, ensuring that each component operates with only the minimum permissions necessary for its function. Regular security assessments focusing on authorization logic and adherence to industry standards such as CWE-269 Improper Privilege Management and CWE-862 Missing Authorization are essential to prevent similar flaws in future deployments and maintain a robust defense-in-depth posture against local privilege escalation attacks aligned with MITRE ATT&CK techniques related to credential access and discovery.