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Vulnerability record · CVE-2017-16564 · published 6 November 2017

CVE-2017-16564: Grandstream ht802 firmware cross-site scripting vulnerability

Grandstream · Ht802 Firmware

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).

5.4 CVSS 3.0 Medium EPSS 0.61% · top 52.7% CWE-79 · Cross-site scripting
5.4CVSS 3.0 base score, v2 3.5
0.61%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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).

CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://distributedcompute.com/2017/11/04/vonage-ht802-multiple-vulnerabilities/ ExploitThird Party Advisory
https://distributedcompute.com/2017/11/04/vonage-ht802-multiple-vulnerabilities/ ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2017-16564), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.