# CVE-2026-101186: Huawei HarmonyOS DoS vulnerability in window module

Source: https://junglewise.ai/threats/cve-2026-101186-dos-vulnerability-in-the-window-module-impact-successful  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-02. Updated: 2026-11-02  
License: CC BY 4.0 with a link back

CVE-2026-101186 · Severity: high · CVSS 7.5 · Published 2026-11-02

HarmonyOS is the operating system that powers Huawei phones, tablets, and PCs. A denial-of-service vulnerability in the window module could allow an attacker to crash the display system or make the device unresponsive, disrupting normal use of the device.

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

## Quick answers

**Is CVE-2026-101186 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-101186 being exploited in the wild.

**How severe is CVE-2026-101186?** High severity, with a CVSS score of 7.5, published 2 November 2026.

**Which products and versions are affected?** Huawei Emui Not listed for this CVE in the advisory; Huawei Harmonyos 6.1.0.

**Is there a fix for CVE-2026-101186?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-101186 attacked?** It is in an operating system.

**Am I affected by CVE-2026-101186?** Check whether you run Huawei Emui or 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

A denial-of-service vulnerability exists in the window module of HarmonyOS that may be exploited to affect system availability. The precise attack vector and preconditions are not detailed in the advisory. A fix is implied by the monthly security update release but specific patched versions are not enumerated.

## Affected products

- Huawei HarmonyOS 6.1.0
- Huawei EMUI Not listed for this CVE in the advisory

## Timeline

- 2026-10-10: disclosed

## References

- [https://consumer.huawei.com/en/support/bulletin/2026/10/](https://consumer.huawei.com/en/support/bulletin/2026/10/)
- [https://consumer.huawei.com/en/support/bulletinlaptops/2026/10/](https://consumer.huawei.com/en/support/bulletinlaptops/2026/10/)

## 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 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)
- [Huawei HarmonyOS race condition in location service module](https://junglewise.ai/threats/cve-2026-101182-race-condition-vulnerability-in-the-location-service-module)