CVE-2020-2509
QNAP Network-Attached Storage (NAS) Command Injection Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 2 May 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
A command injection vulnerability has been reported to affect QTS and QuTS hero. If exploited, this vulnerability allows attackers to execute arbitrary commands in a compromised application. We have already fixed this vulnerability in the following versions: QTS 4.5.2.1566 Build 20210202 and later QTS 4.5.1.1495 Build 20201123 and later QTS 4.3.6.1620 Build 20210322 and later QTS 4.3.4.1632 Build 20210324 and later QTS 4.3.3.1624 Build 20210416 and later QTS 4.2.6 Build 20210327 and later QuTS hero h4.5.1.1491 build 20201119 and later
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 33.99% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 11 April 2022 · due 2 May 2022
- Weakness
- CWE-77, CWE-78
- Affected
- qnap/qts · qnap/quts hero
- Source
- security@qnapsecurity.com.tw
EPSS 34.0% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2020-2509
References
- https://www.qnap.com/en/security-advisory/qsa-21-05Vendor Advisory
- https://www.qnap.com/en/security-advisory/qsa-21-05Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-2509US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.