CVE-2026-58557 in HarmonyOS
Summary
by MITRE • 07/15/2026
Design defect vulnerability in Expedition mode. Impact: Successful exploitation of this vulnerability may affect availability.
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Analysis
by VulDB Data Team • 07/15/2026
This design defect vulnerability exists within the expedition mode functionality of the affected system, representing a fundamental architectural weakness that compromises system availability. The flaw stems from inadequate consideration during the initial design phase, where proper input validation and resource management protocols were not adequately implemented. Such design defects typically fall under the broader category of CWE-400, which encompasses unspecified vulnerabilities related to resource management and system design flaws that can lead to denial of service conditions.
The technical implementation of expedition mode likely involves complex state management and resource allocation mechanisms that fail to properly handle edge cases or malformed inputs. When exploited, this vulnerability allows attackers to manipulate the system's operational parameters in ways that cause unexpected behavior patterns leading to resource exhaustion, process termination, or complete system unavailability. The attacker may leverage specific sequences of operations or data inputs that trigger the design flaw, causing cascading failures throughout the expedition mode functionality.
From an operational impact perspective, this vulnerability presents a significant risk to business continuity and system reliability. Organizations relying on expedition mode for critical operations face potential downtime that could result in substantial financial losses and reputational damage. The availability impact means that legitimate users may be unable to access expedition mode features when the vulnerability is actively exploited, potentially disrupting workflows and operational procedures that depend on this functionality.
The exploitation of this design defect aligns with tactics described in the attack pattern taxonomy under ATT&CK technique T1499, which covers network denial of service attacks. This vulnerability could enable attackers to perform resource exhaustion attacks or system instability operations that specifically target availability rather than confidentiality or integrity. The lack of proper design controls makes it particularly challenging to detect and prevent such attacks using conventional security measures.
Mitigation strategies should focus on implementing comprehensive input validation mechanisms, establishing proper error handling procedures, and conducting thorough design reviews that incorporate threat modeling techniques. Organizations should consider deploying redundant systems, implementing monitoring solutions that can detect anomalous behavior patterns, and establishing incident response protocols specifically designed to address availability-related threats. The solution requires architectural modifications rather than simple patching approaches, emphasizing the need for robust system design principles and adherence to security development lifecycle methodologies.