CVE-2025-20768 is an out-of-bounds read vulnerability classified under CWE-125 that affects a broad range of MediaTek system-on-chip (SoC) models including MT6739, MT6761, MT6765, MT6768, MT6781, MT6789, MT6833, MT6835, MT6853, MT6855, MT6877, MT6878, MT6879, MT6883, MT6885, MT6886, MT6889, MT6893, MT6895, MT6897, MT6899, MT6983, MT6985, MT6989, and MT6991. These SoCs are widely integrated into Android devices running versions 14.0, 15.0, and 16.0. The vulnerability arises from a missing bounds check in the display subsystem, which leads to an out-of-bounds read condition. This flaw can be leveraged by a malicious actor who already possesses System-level privileges on the device to escalate their privileges further, potentially gaining higher control over the system. The attack vector is local, requiring no user interaction, which means that once System access is obtained, exploitation can be automated or triggered without user awareness. The CVSS v3.1 base score is 7.8, indicating a high severity level, with impacts on confidentiality, integrity, and availability. The vulnerability does not currently have known exploits in the wild, but the broad range of affected devices and the critical nature of the display subsystem make it a significant risk. The issue was reserved in November 2024 and published in December 2025, with patches identified by MediaTek under ALPS10196993, though no direct patch links are provided yet. The vulnerability's exploitation could allow attackers to manipulate display-related data structures or memory, potentially leading to system crashes, data leakage, or unauthorized code execution at elevated privileges.

The impact of CVE-2025-20768 is substantial for organizations and end-users relying on affected MediaTek-powered Android devices. Successful exploitation can lead to local privilege escalation, enabling attackers with System privileges to gain even higher control, potentially compromising device confidentiality, integrity, and availability. This could facilitate further attacks such as persistent malware installation, data exfiltration, or disruption of device functionality. Given the vulnerability affects the display subsystem, it could also cause system instability or crashes, impacting device usability. Enterprises deploying large fleets of Android devices with these MediaTek SoCs, especially in sectors like telecommunications, finance, and government, face increased risk of targeted attacks. The lack of required user interaction lowers the barrier for exploitation once System access is obtained, increasing the threat level. Although no exploits are currently known in the wild, the widespread use of these chipsets in emerging markets and mid-range devices globally means the vulnerability could be leveraged in future attacks, especially in environments where device security controls are lax or System privileges are more easily obtained.

To mitigate CVE-2025-20768, organizations and device users should prioritize applying official patches from MediaTek or device manufacturers as soon as they become available. Until patches are deployed, restricting System-level access is critical; this includes enforcing strict application sandboxing, minimizing the number of apps or processes granted System privileges, and monitoring for unusual local privilege escalation attempts. Employing runtime protection mechanisms such as SELinux enforcing mode and integrity monitoring can help detect or prevent exploitation attempts. Device administrators should audit installed applications and remove or restrict those with unnecessary elevated privileges. Additionally, updating Android OS versions to the latest supported releases that include security fixes can reduce exposure. For enterprises, implementing endpoint detection and response (EDR) solutions tailored for mobile devices can aid in identifying suspicious behaviors related to this vulnerability. Finally, educating users and administrators about the risks of granting System-level permissions and encouraging secure device management practices will reduce the likelihood of initial System privilege compromise.