CVE-2018-21066: 
NixOS vulnerability analysis and mitigation

An issue was discovered on Samsung mobile devices with M(6.0) (Exynos or MediaTek chipsets) software. There is a buffer overflow in a Trustlet that can cause memory corruption. The vulnerability was discovered in July 2018 and is tracked as CVE-2018-21066 with Samsung ID SVE-2018-11599 (NVD).

The vulnerability is classified as a Classic Buffer Overflow (CWE-120) that occurs in a Trustlet component. It has received a CVSS v3.1 Base Score of 9.8 CRITICAL with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, indicating high severity with network attack vector, low complexity, and no required privileges or user interaction (NVD).

The buffer overflow vulnerability can lead to memory corruption in the affected devices. Given the CVSS score and vector, successful exploitation could result in complete compromise of confidentiality, integrity, and availability of the system (NVD).

Samsung has released security patches to address this vulnerability through their mobile security updates program. Users of affected devices should ensure they have installed all available security updates (Samsung Mobile Security).