How severe is CVE-2018-14747?

CVE-2018-14747 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-14747 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-14747?

CVE-2018-14747 primarily affects Qnap Qts. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-14747?

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

When was CVE-2018-14747 published?

CVE-2018-14747 was published on 2018-11-28 and last updated on 2026-06-17.

CVE-2018-14747

CVE-2018-14747 is a high-severity vulnerability in Qnap Qts with a CVSS 3.x base score of 7.5. 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-476.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Qnap Qts
Published: 2018-11-28
Last modified: 2026-06-17

Description

NULL Pointer Dereference vulnerability in QTS 4.3.5 build 20181013, QTS 4.3.4 build 20181008, QTS 4.3.3 build 20180829, QTS 4.2.6 build 20180829 and earlier versions could allow remote attackers to crash the NAS media server.

Frequently asked questions

What is CVE-2018-14747?: NULL Pointer Dereference vulnerability in QTS 4.3.5 build 20181013, QTS 4.3.4 build 20181008, QTS 4.3.3 build 20180829, QTS 4.2.6 build 20180829 and earlier versions could allow remote attackers to crash the NAS media server.
How severe is CVE-2018-14747?: CVE-2018-14747 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-14747 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-14747?: CVE-2018-14747 primarily affects Qnap Qts. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-14747?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-14747 published?: CVE-2018-14747 was published on 2018-11-28 and last updated on 2026-06-17.

References

https://www.qnap.com/zh-tw/security-advisory/nas-201811-22

Affected products (4)

cpe:2.3:o:qnap:qts:4.2.6:*:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.3:*:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.4:*:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.5:*:*:*:*:*:*:*

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