Openharmony CVE-2025-6969

The CVSS v3.1 vector CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H indicates moderate severity with several risk-limiting factors: the attack vector is Local only (AV:L), meaning remote exploitation is not possible; the attack complexity is Low (AC:L), indicating no special conditions are required; and the attacker requires Low privilege credentials (PR:L), reducing the pool of potential attackers. The UI:R flag shows that user interaction is required to trigger the vulnerability, further limiting automated exploitation. While the impact is High availability (A:H), there is no confidentiality or integrity impact (C:N, I:N), meaning data theft and tampering are not concerns. Without publicly disclosed EPSS scores or active KEV status confirmation from CISA, the real-world exploitation probability appears limited by these technical constraints. The vulnerability presents a moderate priority for organizations running OpenHarmony, particularly those in IoT deployments where local device access can be controlled, but the requirement for local presence and user interaction significantly reduces enterprise risk compared to remote unauthenticated vulnerabilities.

An authenticated local user on an OpenHarmony device (such as a guest account or standard user with device access) discovers that a particular input field or system function accepts crafted data without proper validation. The attacker submits specially formatted input—such as an extremely long string, special characters, or binary data—through a local application interface or system utility. The system attempts to process this malicious input without adequate validation, causing a buffer overflow, infinite loop, or resource exhaustion that crashes the affected service or freezes the entire device, achieving denial of service. No complex exploitation techniques or privilege escalation are required; user interaction is minimal once the vulnerability is understood. While this scenario is limited to local attackers, it remains a significant concern for shared-access devices or those accessible to untrusted local users.