How severe is CVE-2017-7640?

CVE-2017-7640 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-2017-7640 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-7640?

CVE-2017-7640 affects Qnap Media Streaming Add-on. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-7640?

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-2017-7640 published?

CVE-2017-7640 was published on 2018-03-08 and last updated on 2026-06-17.

CVE-2017-7640

CVE-2017-7640 is a critical-severity vulnerability in Qnap Media Streaming Add-on 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-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Qnap Media Streaming Add-on
Published: 2018-03-08
Last modified: 2026-06-17

Description

QNAP NAS application Media Streaming add-on version 421.1.0.2, 430.1.2.0, and earlier allows remote attackers to run arbitrary OS commands against the system with root privileges.

Frequently asked questions

What is CVE-2017-7640?: QNAP NAS application Media Streaming add-on version 421.1.0.2, 430.1.2.0, and earlier allows remote attackers to run arbitrary OS commands against the system with root privileges.
How severe is CVE-2017-7640?: CVE-2017-7640 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-2017-7640 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-7640?: CVE-2017-7640 affects Qnap Media Streaming Add-on. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-7640?: 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-2017-7640 published?: CVE-2017-7640 was published on 2018-03-08 and last updated on 2026-06-17.

References

https://www.qnap.com/zh-tw/security-advisory/nas-201803-08

Affected products (1)

cpe:2.3:a:qnap:media_streaming_add-on:*:*:*:*:*:*:*:*

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