# CVE-2026-28751: OpenHarmony denial of service via improper input validation

Source: https://junglewise.ai/threats/cve-2026-28751-openharmony-denial-of-service-via-improper-input-validation  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-19. Updated: 2026-05-19  
License: CC BY 4.0 with a link back

CVE-2026-28751 · Severity: low · CVSS 3.3 · Published 2026-05-19

A vulnerability in the OpenHarmony operating system allows a local user to cause a denial-of-service condition. This could result in system instability or the crashing of specific services, temporarily disrupting the device's availability for the user. Because the attack requires local access, it is primarily a risk on shared devices or from malicious applications already installed on the system.

Technologies: [OpenHarmony](https://junglewise.ai/threats/technologies/openharmony). Vendors: [OpenHarmony](https://junglewise.ai/threats/vendors/openharmony).

## Quick answers

**Is CVE-2026-28751 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-28751 being exploited in the wild.

**How severe is CVE-2026-28751?** Low severity, with a CVSS score of 3.3, published 19 May 2026.

**Which products and versions are affected?** OpenHarmony v6.0 and prior versions.

**Is there a fix for CVE-2026-28751?** 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-2026-28751 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2026-28751?** Check whether you run OpenHarmony 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 (DoS) vulnerability exists in OpenHarmony v6.0 and earlier versions due to improper input validation (CWE-20). A local attacker with low privileges can exploit this flaw to trigger a service crash or system instability. The attack does not require user interaction and has no impact on data confidentiality or integrity. The vulnerability was disclosed by the OpenHarmony security team in their April 2026 security bulletin. Users are advised to monitor for official patches or updates to the OpenHarmony OS.

## Affected products

- OpenHarmony OpenHarmony v6.0 and prior versions

## Timeline

- 2026-05-19: disclosed: Initial NVD publication date

## References

- [https://gitcode.com/openharmony/security/tree/master/zh/security-disclosure/2026/2026-04.md](https://gitcode.com/openharmony/security/tree/master/zh/security-disclosure/2026/2026-04.md)

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