CVE-2017-17027
A buffer overflow vulnerability in FTP service in QNAP QTS version 4.2.6 build 20171026, 4.3.3...
A buffer overflow vulnerability in FTP service in QNAP QTS version 4.2.6 build 20171026, 4.3.3.0378 build 20171117, 4.3.4.0387 (Beta 2) build 20171116 and earlier could allow remote attackers to execute arbitrary code on NAS devices.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
A buffer overflow vulnerability in FTP service in QNAP QTS version 4.2.6 build 20171026, 4.3.3.0378 build 20171117, 4.3.4.0387 (Beta 2) build 20171116 and earlier could allow remote attackers to execute arbitrary code on NAS devices.
- Record
CVE-2017-17027- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-119
- Updated
- 2026-11-02
CVE List No score
A buffer overflow vulnerability in FTP service in QNAP QTS version 4.2.6 build 20171026, 4.3.3.0378 build 20171117, 4.3.4.0387 (Beta 2) build 20171116 and earlier could allow remote attackers to execute arbitrary code on NAS devices.
- Record
CVE-2017-17027- Updated
- 2026-11-02
EUVDEUVD-2017-8197 No score
A buffer overflow vulnerability in FTP service in QNAP QTS version 4.2.6 build 20171026, 4.3.3.0378 build 20171117, 4.3.4.0387 (Beta 2) build 20171116 and earlier could allow remote attackers to execute arbitrary code on NAS devices.
- Record
EUVD-2017-8197- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-cg92-qjvr-r7gp
A buffer overflow vulnerability in FTP service in QNAP QTS version 4.2.6 build 20171026, 4.3.3...
A buffer overflow vulnerability in FTP service in QNAP QTS version 4.2.6 build 20171026, 4.3.3.0378 build 20171117, 4.3.4.0387 (Beta 2) build 20171116 and earlier could allow remote attackers to execute arbitrary code on NAS devices.
- Record
GHSA-cg92-qjvr-r7gp- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-119
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2017-17027 is a critical vulnerability (CVSS 9.8) in Qnap Qts, published December 21, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.28%, the 88th percentile. No source names a fixed version.