This vulnerability involves a double free condition (CWE-415) in the multi-mode input system component of Huawei HarmonyOS, affecting versions 5.1.0 and 6.0.0. A double free occurs when the same memory is freed more than once, potentially leading to memory corruption and system instability. The CVSS 3.1 base score is 5.6, reflecting a medium severity with local attack vector, low attack complexity, requiring low privileges and user interaction, no confidentiality impact, low integrity impact, and high availability impact. The vulnerability is published and assigned CVE-2026-34867 but lacks vendor-provided remediation details or patches.

Exploitation of this vulnerability may cause denial of service by affecting the availability of the affected HarmonyOS system. There is no indication of confidentiality or significant integrity impact. No known active exploitation has been reported.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or temporary workaround is documented, users and administrators should monitor Huawei's security advisories for updates. Until a patch is available, limiting local user access and minimizing user interaction with untrusted input may reduce exposure.