What is CVE-2026-6840?

CVE-2026-6840 is a medium-severity vulnerability in Samsung One, classified under Improper Validation of Array Index. CVSS score: 5.5/10. Published 2026-04-22.

How severe is CVE-2026-6840?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Samsung One

CVE-2026-6840

Missing bounds validation for operator could allow out of range operator-code lookup during model loading Affected version is prior to commit 1.30.0.

Published 2026-04-22 · last modified 2026-09-24.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.001 (3.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 3.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

Samsung One
Samsung Open Source One — versions 1.30.0

Weakness classification (CWE)

CWE-129 — Improper Validation of Array Index

References

github.com/Samsung/ONE/pull/16481 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-6840?: CVE-2026-6840 is a medium-severity vulnerability in Samsung One, classified under Improper Validation of Array Index. CVSS score: 5.5/10. Published 2026-04-22.
How severe is CVE-2026-6840?: Medium severity. CVSS v3 base score is 5.5 out of 10.