Buffer overflow in Openharmony

CVE-2026-27648

in OpenHarmony v6.0 and prior versions allow a remote attacker arbitrary code execution in pre-installed apps.

Vulnerability class: Buffer Overflow

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (53.4th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-27648: held from 0.006 to 0.007.

EPSS over last 30 days · oldest: 0.006 · newest: 0.007 · change: +0.002

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-27648?
CVE-2026-27648 is a high-severity vulnerability in Openharmony, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2026-05-19.
How severe is CVE-2026-27648?
High severity. CVSS v3 base score is 8.8 out of 10.