How severe is CVE-2017-17030?

CVE-2017-17030 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-17030 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-17030?

CVE-2017-17030 primarily affects Qnap Qts. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-17030?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2017-17030 published?

CVE-2017-17030 was published on 2017-12-21 and last updated on 2026-06-17.

CVE-2017-17030

CVE-2017-17030 is a critical-severity vulnerability in Qnap Qts with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Qnap Qts
Published: 2017-12-21
Last modified: 2026-06-17

Description

A buffer overflow vulnerability in login function 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.

Frequently asked questions

What is CVE-2017-17030?: A buffer overflow vulnerability in login function 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.
How severe is CVE-2017-17030?: CVE-2017-17030 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-17030 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-17030?: CVE-2017-17030 primarily affects Qnap Qts. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-17030?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2017-17030 published?: CVE-2017-17030 was published on 2017-12-21 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.4.0358:beta1:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.4.0370:beta1:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.4.0372:beta1:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.4.0374:beta1:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.4.0387:beta2:*:*:*:*:*:*

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