Executive brief
A permission control flaw in Huawei's HarmonyOS operating system's window management module could allow an attacker to bypass access restrictions and view sensitive information. The vulnerability affects the core system that manages application windows and their isolation, potentially exposing confidential user data if exploited.
Technical details
This is a permission control vulnerability (CWE-269 or similar improper authorization flaw) in the window module of HarmonyOS. The vulnerability allows improper access to window resources due to insufficient permission enforcement, enabling unauthorized disclosure of sensitive information handled by applications. The attack vector and preconditions are not fully detailed in the advisory, but exploitation could occur locally or through a malicious application. The vulnerability affects HarmonyOS 6.1.0 running on both phones/tablets and PCs. Huawei has released patches as part of their September 2026 security update.
Affected products
- Huawei HarmonyOS 6.1.0
Timeline
- 2026-09-09: disclosed: Published in Huawei security bulletin
- 2026-09: patched: Fix included in September 2026 security update