How severe is CVE-2023-39300?

CVE-2023-39300 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-39300 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-39300?

CVE-2023-39300 primarily affects Qnap Qts. In total, 79 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-39300?

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.

Does CVE-2023-39300 have an EU (EUVD) identifier?

Yes. CVE-2023-39300 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-43032.

When was CVE-2023-39300 published?

CVE-2023-39300 was published on 2024-09-06 and last updated on 2026-06-17.

CVE-2023-39300

CVE-2023-39300 is a high-severity vulnerability in Qnap Qts with a CVSS 3.x base score of 7.2. 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-78.

Key facts

Severity: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-43032
Weakness: CWE-78
Affected product: Qnap Qts
Published: 2024-09-06
Last modified: 2026-06-17

Description

An OS command injection vulnerability has been reported to affect legacy QTS. If exploited, the vulnerability could allow authenticated administrators to execute commands via a network. We have already fixed the vulnerability in the following versions: QTS 4.3.6.2805 build 20240619 and later QTS 4.3.4.2814 build 20240618 and later QTS 4.3.3.2784 build 20240619 and later QTS 4.2.6 build 20240618 and later

Frequently asked questions

What is CVE-2023-39300?: An OS command injection vulnerability has been reported to affect legacy QTS. If exploited, the vulnerability could allow authenticated administrators to execute commands via a network. We have already fixed the vulnerability in the following versions: QTS 4.3.6.2805 build 20240619 and later QTS 4.3.4.2814 build 20240618 and later QTS 4.3.3.2784 build 20240619 and later QTS 4.2.6 build 20240618 and later
How severe is CVE-2023-39300?: CVE-2023-39300 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-39300 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-39300?: CVE-2023-39300 primarily affects Qnap Qts. In total, 79 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-39300?: 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.
Does CVE-2023-39300 have an EU (EUVD) identifier?: Yes. CVE-2023-39300 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-43032.
When was CVE-2023-39300 published?: CVE-2023-39300 was published on 2024-09-06 and last updated on 2026-06-17.

References

https://www.qnap.com/en/security-advisory/qsa-24-26

Affected products (79)

cpe:2.3:o:qnap:qts:4.3.6.0895:build_20190328:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.0907:build_20190409:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.0923:build_20190425:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.0944:build_20190516:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.0959:build_20190531:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.0979:build_20190620:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.0993:build_20190704:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.1013:build_20190724:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.1033:build_20190813:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.1070:build_20190919:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.1154:build_20191212:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.1218:build_20200214:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.1263:build_20200330:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.1286:build_20200422:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.1333:build_20200608:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.1411:build_20200825:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.1446:build_20200929:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.1620:build_20210322:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.1663:build_20210504:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.1711:build_20210621:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.1750:build_20210730:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.1831:build_20211019:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.1907:build_20220103:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.1965:build_20220302:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.2050:build_20220526:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.2232:build_20221124:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.2441:build_20230621:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.6.2665:build_20240131:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.4.0899:build_20190322:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.4.1029:build_20190730:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.4.1082:build_20190921:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.4.1190:build_20200107:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.4.1282:build_20200408:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.4.1368:build_20200703:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.4.1417:build_20200821:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.4.1463:build_20201006:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.4.1632:build_20210324:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.4.1652:build_20210413:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.4.1976:build_20220303:*:*:*:*:*:*
cpe:2.3:o:qnap:qts:4.3.4.2107:build_20220712:*:*:*:*:*:*

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