CVE-2020-2509
QNAP Network-Attached Storage (NAS) Command Injection Vulnerability
QNAP QNAP Network-Attached Storage (NAS)Network & edge
CVSS
9.8CriticalExploit odds (EPSS)34.0%Chance of exploitation activity in the next 30 days, higher than 98% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in4.5.2.1566 Build 20210202Also 4.5.1.1495 Build 20201123, 4.3.6.1620 Build 20210322 and 3 moreCVE List
CISA required actionApply updates per vendor instructions. CISA KEV
What fixes it
- 4.5.2.1566 Build 20210202QTSCVE List
- 4.5.1.1495 Build 20201123QTSCVE List
- 4.3.6.1620 Build 20210322QTSCVE List
- 4.3.4.1632 Build 20210324QTSCVE List
- 4.3.3.1624 Build 20210416QTSCVE List
- 4.2.6 Build 20210327QTSCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Timeline
Description
QNAP NAS devices contain a command injection vulnerability which could allow attackers to perform remote code execution.
Text from CVE List
Affected versions 7
- QTSaffected: unspecified before 4.5.2.1566 Build 20210202CVE List
- QTSaffected: unspecified before 4.5.1.1495 Build 20201123CVE List
- QTSaffected: unspecified before 4.3.6.1620 Build 20210322CVE List
- QTSaffected: unspecified before 4.3.4.1632 Build 20210324CVE List
- QTSaffected: unspecified before 4.3.3.1624 Build 20210416CVE List
- QTSaffected: unspecified before 4.2.6 Build 20210327CVE List
- QuTS heroaffected: unspecified before h4.5.1.1491 build 20201119CVE List