CVE-2026-41987 in HarmonyOS
Summary
by MITRE • 09/09/2026
Permission control vulnerability in the app management module. Impact: Successful exploitation of this vulnerability may affect availability.
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Analysis
by VulDB Data Team • 09/09/2026
The identified security flaw resides within the application management subsystem, specifically manifesting as a permission control deficiency that undermines the integrity of access enforcement mechanisms. This type of vulnerability typically arises when the system fails to adequately verify whether an authenticated user possesses the requisite privileges before executing administrative actions or accessing sensitive configuration data. In many enterprise environments, the app management module serves as a central point for deploying, updating, and configuring software applications across distributed infrastructure. When permission checks are either absent, improperly implemented, or susceptible to bypass techniques such as insecure direct object references or privilege escalation via parameter manipulation, the boundary between standard user roles and administrative privileges becomes blurred. This structural weakness allows attackers who have obtained valid credentials for a lower-privileged account to perform operations that should be restricted to system administrators or specialized security personnel.
From an operational perspective, the primary impact of this vulnerability is on the availability component of the CIA triad. While many permission flaws lead to data confidentiality breaches or integrity violations, in this specific context, the exploitation vector likely involves actions that disrupt service continuity. An attacker could leverage these elevated permissions to terminate critical application processes, delete essential configuration files, disable security monitoring agents, or alter network routing rules associated with application hosting environments. Such actions can result in partial or complete denial of service for dependent services and users. Furthermore, if the vulnerability allows for the installation of malicious applications or modification of deployment scripts, it could introduce backdoors that lead to prolonged outages during remediation efforts or cause cascading failures across interconnected systems within a microservices architecture.
This flaw aligns closely with Common Weakness Enumeration (CWE) identifiers such as CWE-269 Improper Privilege Management and CWE-862 Missing Authorization, which describe scenarios where access control decisions are not enforced correctly during the execution of privileged operations. In terms of tactical classification under the MITRE ATT&CK framework, this vulnerability facilitates techniques related to Defense Evasion through Permission Flaws or potentially Impact via Service Stop if the attacker focuses on disrupting availability rather than maintaining persistence. The lack of robust role-based access control (RBAC) enforcement means that lateral movement within the management plane becomes significantly easier for adversaries who have compromised a single endpoint with valid but insufficient credentials, allowing them to pivot toward more critical infrastructure components without triggering immediate alerts associated with brute-force administrative login attempts.
To mitigate this risk, organizations must implement strict least-privilege principles across all application management interfaces and APIs. This involves conducting a comprehensive audit of existing permission mappings to ensure that every function call is validated against the user's current role and context before execution. Implementing multi-factor authentication for any action classified as high-risk or administrative in nature adds an additional layer of verification that can prevent unauthorized changes even if credentials are compromised. Additionally, deploying web application firewalls with rules specifically tuned to detect abnormal sequences of requests indicative of privilege escalation attempts can provide a defensive perimeter control. Regular penetration testing focused on access control logic and the integration of automated static analysis tools into the software development lifecycle will help identify these logical flaws early in the design phase rather than after deployment.