How severe is CVE-2017-16566?

CVE-2017-16566 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-2017-16566 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-16566?

CVE-2017-16566 affects Qacctv Jooan A5 Ip Camera Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-16566?

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-2017-16566 published?

CVE-2017-16566 was published on 2017-11-17 and last updated on 2026-06-17.

CVE-2017-16566

CVE-2017-16566 is a critical-severity vulnerability in Qacctv Jooan A5 Ip Camera Firmware 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-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Qacctv Jooan A5 Ip Camera Firmware
Published: 2017-11-17
Last modified: 2026-06-17

Description

On Jooan IP Camera A5 2.3.36 devices, an insecure FTP server does not require authentication, which allows remote attackers to read or replace core system files including those used for authentication (such as passwd and shadow). This can be abused to take full root level control of the device.

Frequently asked questions

What is CVE-2017-16566?: On Jooan IP Camera A5 2.3.36 devices, an insecure FTP server does not require authentication, which allows remote attackers to read or replace core system files including those used for authentication (such as passwd and shadow). This can be abused to take full root level control of the device.
How severe is CVE-2017-16566?: CVE-2017-16566 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-2017-16566 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-16566?: CVE-2017-16566 affects Qacctv Jooan A5 Ip Camera Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-16566?: 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-2017-16566 published?: CVE-2017-16566 was published on 2017-11-17 and last updated on 2026-06-17.

References

https://siggyd.github.io/Advisories/CVE-2017-16566

Affected products (1)

cpe:2.3:o:qacctv:jooan_a5_ip_camera_firmware:2.3.36:*:*:*:*:*:*:*

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