MediaTek WiFi Out-of-Bounds Read and Write Flaws

Out-of-bounds read in the MediaTek Wi-Fi driver component on MT6988, MT6990, and MT6890 chipsets permits local information disclosure against devices where an attacker has already obtained System-level privilege. The missing bounds check in the Wi-Fi stack allows reading memory beyond the intended buffer boundary, exposing potentially sensitive kernel or driver memory contents. No public exploit exists and EPSS at 0.13% (3rd percentile) reflects the significant privilege prerequisite that constrains real-world exploitation; CISA KEV does not list this vulnerability.

Out-of-bounds write in the wifi subsystem of MediaTek MT6890, MT6990, and MT6988 chipsets enables a local denial of service, crashing the wifi component or device. Exploitation requires that the attacker has already obtained System-level privilege on the affected device - an extremely high bar that makes this a post-exploitation nuisance rather than an initial access vector. EPSS sits at 0.13% (3rd percentile), no public exploit code exists, and the vulnerability is not listed in the CISA KEV catalog, all consistent with the substantial privilege prerequisite.