# CVE-2026-49312: Huawei HarmonyOS permission control vulnerability in window module

Source: https://junglewise.ai/threats/cve-2026-49312-huawei-harmonyos-permission-control-vulnerability-in-window  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-09. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-49312 · Severity: medium · CVSS 4 · Published 2026-09-09

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.

Technologies: [Huawei Harmonyos](https://junglewise.ai/threats/technologies/harmonyos). Vendors: [Huawei](https://junglewise.ai/threats/vendors/huawei).

## Quick answers

**Is CVE-2026-49312 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-49312 being exploited in the wild.

**How severe is CVE-2026-49312?** Medium severity, with a CVSS score of 4, published 9 September 2026.

**Which products and versions are affected?** Huawei Harmonyos 6.1.0.

**Is there a fix for CVE-2026-49312?** A patch was published on 2026-09: Fix included in September 2026 security update Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-49312 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-49312?** Check whether you run Huawei Harmonyos at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## 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

## References

- [https://consumer.huawei.com/en/support/bulletin/2026/9/](https://consumer.huawei.com/en/support/bulletin/2026/9/)
- [https://consumer.huawei.com/en/support/bulletinlaptops/2026/9/](https://consumer.huawei.com/en/support/bulletinlaptops/2026/9/)

## Related threats

- [Huawei HarmonyOS/EMUI Bluetooth permission control vulnerability](https://junglewise.ai/threats/cve-2026-101184-permission-control-vulnerability-in-the-bluetooth-module-impact)
- [Huawei HarmonyOS autofill service permission control bypass](https://junglewise.ai/threats/cve-2026-101178-permission-control-vulnerability-in-the-autofill-service-module)
- [Huawei HarmonyOS DoS vulnerability in window module](https://junglewise.ai/threats/cve-2026-101186-dos-vulnerability-in-the-window-module-impact-successful)
- [Huawei HarmonyOS peripheral module out-of-bounds read](https://junglewise.ai/threats/cve-2026-101185-oob-read-vulnerability-in-the-peripheral-module-impact)
- [Huawei HarmonyOS use-after-free in location service module](https://junglewise.ai/threats/cve-2026-101183-uaf-vulnerability-in-the-location-service-module-impact)