Executive brief
Samsung Notes is a note-taking application used on Samsung mobile devices to create and manage text documents and notes. An out-of-bounds write vulnerability allows local attackers with access to the device to write data beyond allocated memory boundaries, potentially causing application crashes, data corruption, or enabling further system compromise.
Technical details
The vulnerability is an out-of-bounds write in Samsung Notes prior to version 4.4.45.5, allowing local attackers to write outside allocated memory regions. The root cause is improper input validation when processing note data. Attack requires local device access; no network vector or authentication bypass is involved. An attacker can achieve memory corruption that may lead to denial of service or facilitate privilege escalation depending on memory layout and exploitation technique. The patch in version 4.4.45.5 adds proper input validation to prevent out-of-bounds writes.
Affected products
- Samsung Notes prior to 4.4.45.5
Timeline
- 2026-09-09: disclosed: Published by Samsung Mobile Security