Quick answers
- Is CVE-2026-28733 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-28733 being exploited in the wild.
- How severe is CVE-2026-28733?
- Medium severity, with a CVSS score of 6.5, published 19 May 2026.
- Which products and versions are affected?
- OpenHarmony v6.0 and prior versions.
- Is there a fix for CVE-2026-28733?
- 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-2026-28733 attacked?
- It is attacked with local access, in an operating system.
- Am I affected by CVE-2026-28733?
- 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 use-after-free vulnerability (CWE-416) exists in OpenHarmony v6.0 and earlier versions. The flaw occurs when the system continues to use a pointer after it has been freed, which can be manipulated by a local attacker to execute arbitrary code or cause a denial-of-service (system crash). The attack requires local access with low privileges and no user interaction. While the CVSS vector provided by the CNA (AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H) emphasizes high availability impact, the vulnerability description confirms the potential for arbitrary code execution. Users should refer to the OpenHarmony security disclosure for May 2026 for patching information.
Affected products
- OpenHarmony OpenHarmony v6.0 and prior versions
Timeline
- 2026-05-19: disclosed
- 2026-05-19: advisory