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

EPSS: 0.002 (45.8th percentile) — read the EPSS interpretation.

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.

Affected products

Openharmony — versions v5.0.3

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

scy@openharmony.io

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.