A vulnerability labeled as critical has been found in MediaTek MT7902, MT7920, MT7921, MT7922, MT7925 and MT7927 . Affected is an unknown function of the component WLAN STA Driver . The manipulation results in out-of-bounds write. This vulnerability was named CVE-2026-20456 . The attack needs to be approached locally. There is no available exploit. Applying a patch is advised to resolve this issue.