CVE-2015-4422

CVE-2015-4422 describes a privilege escalation and denial-of-service vulnerability in the TEEOS module of Huawei Mate 7 smartphones, specifically affecting versions prior to V100R001CHNC00B126SP03. A local attacker with root permissions can exploit this flaw using a specially crafted application to gain elevated privileges or cause memory corruption. The vulnerability is rated as HIGH severity (CVSS 7.0), indicating a significant impact on confidentiality, integrity, and availability, though it requires user interaction and high attack complexity. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.