How severe is CVE-2017-16564?

CVE-2017-16564 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2017-16564 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-16564?

CVE-2017-16564 affects Grandstream Ht802 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-16564?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2017-16564 published?

CVE-2017-16564 was published on 2017-11-06 and last updated on 2026-06-17.

CVE-2017-16564

CVE-2017-16564 is a medium-severity vulnerability in Grandstream Ht802 Firmware with a CVSS 3.x base score of 5.4. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Grandstream Ht802 Firmware
Published: 2017-11-06
Last modified: 2026-06-17

Description

Stored Cross-site scripting (XSS) vulnerability in /cgi-bin/config2 on Vonage (Grandstream) HT802 devices allows remote authenticated users to inject arbitrary web script or HTML via the DHCP vendor class ID field (P148).

Frequently asked questions

What is CVE-2017-16564?: Stored Cross-site scripting (XSS) vulnerability in /cgi-bin/config2 on Vonage (Grandstream) HT802 devices allows remote authenticated users to inject arbitrary web script or HTML via the DHCP vendor class ID field (P148).
How severe is CVE-2017-16564?: CVE-2017-16564 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2017-16564 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-16564?: CVE-2017-16564 affects Grandstream Ht802 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-16564?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-16564 published?: CVE-2017-16564 was published on 2017-11-06 and last updated on 2026-06-17.

References

https://distributedcompute.com/2017/11/04/vonage-ht802-multiple-vulnerabilities/

Affected products (1)

cpe:2.3:o:grandstream:ht802_firmware:-:*:*:*:*:*:*:*

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