CVE-2025-58298 is a stack-based buffer overflow vulnerability classified under CWE-121, discovered in the package management module of Huawei's HarmonyOS versions 5.0.1 and 5.1.0. The flaw stems from improper handling of data inputs during package management operations, leading to memory corruption on the stack. This vulnerability can be exploited locally (AV:L) without requiring privileges (PR:N) or user interaction (UI:N), which means an attacker with local access can trigger the overflow. The impact primarily affects system availability (A:H), potentially causing crashes or denial of service, with limited impact on confidentiality (C:L) and integrity (I:L). The CVSS 3.1 base score is 7.3, reflecting a high severity level. No public exploits or patches are currently available, indicating a window of exposure. The vulnerability's presence in a core OS component like package management raises concerns for device stability and reliability, especially in environments relying on HarmonyOS for critical operations. Given the local attack vector, threat actors would need some form of local access, such as physical access or compromised local accounts, to exploit this vulnerability.

For European organizations, the primary impact of CVE-2025-58298 is on the availability of devices running affected versions of HarmonyOS. This could lead to denial of service conditions, disrupting business operations, especially in sectors relying on Huawei devices for telecommunications, IoT, or enterprise mobile environments. The limited confidentiality and integrity impact reduces risks of data breaches or unauthorized data modification, but service interruptions could affect critical infrastructure or customer-facing services. Organizations deploying HarmonyOS in industrial control systems or smart city applications may face operational risks. The absence of known exploits reduces immediate threat but also means organizations must proactively prepare for potential exploitation once public exploits emerge. The local attack vector limits remote exploitation risks but increases the importance of physical security and internal access controls within organizations.

1. Restrict local access to devices running affected HarmonyOS versions by enforcing strict physical security and limiting user privileges. 2. Monitor Huawei's security advisories closely for patches or updates addressing CVE-2025-58298 and apply them promptly once available. 3. Implement application whitelisting and integrity monitoring on HarmonyOS devices to detect anomalous behavior related to package management. 4. Conduct regular audits of device configurations and installed packages to identify unauthorized changes or suspicious activity. 5. For critical environments, consider network segmentation to isolate HarmonyOS devices and reduce the risk of lateral movement in case of compromise. 6. Educate staff on the risks of local exploitation and enforce policies to prevent unauthorized device access. 7. Employ endpoint detection and response (EDR) solutions capable of monitoring local system calls and memory anomalies on HarmonyOS devices, if supported.