Quick answers
- Is CVE-2026-27648 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-27648 being exploited in the wild.
- How severe is CVE-2026-27648?
- High severity, with a CVSS score of 8.8, published 19 May 2026.
- Which products and versions are affected?
- OpenHarmony v6.0 and prior versions.
- Is there a fix for CVE-2026-27648?
- 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-2026-27648 attacked?
- It is attacked over the network, in an operating system.
- Am I affected by CVE-2026-27648?
- 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
An out-of-bounds write vulnerability (CWE-787) exists in OpenHarmony v6.0 and earlier. The flaw allows a remote attacker with low privileges to achieve arbitrary code execution within the context of pre-installed applications. The attack vector is network-based and does not require user interaction, though it does require a low level of authentication. Successful exploitation results in a high impact on confidentiality, integrity, and availability. Users are advised to refer to the OpenHarmony security disclosure for April 2026 for patching information.
Affected products
- OpenHarmony OpenHarmony v6.0 and prior versions
Timeline
- 2026-05-19: disclosed
- 2026-05-19: advisory