CVE-2018-0721: QNAP QTS

High severity, CVSS 7.7. EPSS: 1.6% chance of exploitation in the next 30 days.

Buffer Overflow vulnerability in NAS devices. QTS allows attackers to run arbitrary code. This issue affects: QNAP Systems Inc. QTS version 4.2.6 and prior versions on build 20180711; version 4.3.3 and prior versions on build 20180725; version 4.3.4 and prior versions on build 20180710.

Affected products

• QNAP QTS: version 4.2.6 only; version 4.3.3 only; version 4.3.4 only

Published 2018-11-27. Last modified 2026-06-17.