Quick answers
- Is CVE-2026-25781 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-25781 being exploited in the wild.
- How severe is CVE-2026-25781?
- High severity, with a CVSS score of 8.4, published 19 May 2026.
- Which products and versions are affected?
- OpenHarmony v6.0 and prior versions.
- Is there a fix for CVE-2026-25781?
- 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-2026-25781 attacked?
- It is attacked with local access, in an operating system.
- Am I affected by CVE-2026-25781?
- 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. A local attacker with low privileges can exploit this flaw to trigger a denial-of-service (DoS) condition. According to the advisory, the resulting system failure is non-recoverable, suggesting corruption of critical system components or firmware. While the provided CVSS vector (AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N) strangely emphasizes Confidentiality and Integrity over Availability, the descriptive text explicitly confirms a permanent DoS impact.
Affected products
- OpenHarmony OpenHarmony v6.0 and prior versions
Timeline
- 2026-05-19: disclosed
- 2026-05-19: advisory