CVE-2026-6839 Memory corruption in ONE

Medium 6.6 Published 22 Apr 2026 Updated 22 Apr 2026

Attackers can trigger out-of-bounds memory access via malformed string metadata in Samsung ONE, potentially leading to code execution or crashes.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-6839?

CVE-2026-6839 is a medium-severity memory corruption vulnerability in Samsung Open Source ONE, published on 22 Apr 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Improper validation of STRING tensor offsets could allows malformed string metadata to trigger out of bounds access during constant tensor import in Samsung Open Source ONE Affected version is prior to commit 1.30.0.

Weakness: CWE-1284

Which versions are affected by CVE-2026-6839?

It affects 1 product.

Products include Samsung One.

How do I fix CVE-2026-6839?

No fix has been published for CVE-2026-6839 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-6839 being exploited?

There is no known exploitation of CVE-2026-6839 in the wild and no public exploit code.

Sources

Also known as GHSA-mqr4-9x5m-973r.