CVE-2017-16565 — Cross-Site Request Forgery (CSRF) in /cgi-bin/login on Vonage (Grandstream) HT802 devices allows attackers to authenticate a user via the login screen using the default password of 123 and submit arbitrary requests

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HIGH

Cross-Site Request Forgery (CSRF) in /cgi-bin/login on Vonage (Grandstream) HT802 devices allows attackers to authenticate a user via the login screen using the default password of 123 and submit arbitrary requests

Published Nov 6, 2017

8.8

HIGH

CVSS 3.0

EPSS 0.49%

Description

Cross-Site Request Forgery (CSRF) in /cgi-bin/login on Vonage (Grandstream) HT802 devices allows attackers to authenticate a user via the login screen using the default password of 123 and submit arbitrary requests.

Affected products

Remediation

No remediation recorded yet.

Metrics

0.49% 0.00494

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.00494

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Table of values (9 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	0.49% (0.00494)	40.16th	v5 (v2026.06.15)
Sep 20, 2026	0.49% (0.00494)	41.49th	v5 (v2026.06.15)
Jul 20, 2024	0.11% (0.00112)	45.14th	v3 (v2023.03.01)
Jul 3, 2024	0.11% (0.00112)	45.03th	v3 (v2023.03.01)
Mar 7, 2023	0.11% (0.00112)	43.03th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00885)	27.89th	v2 (v2022.01.01)
Feb 4, 2022	0.89% (0.00885)	10.50th	v2 (v2022.01.01)
Feb 3, 2022	0.42% (0.00416)	10.04th	v5 (v2026.06.15)
Apr 14, 2021	0.42% (0.00416)	0.00th	v1

Weaknesses (1)

CWE-352

CSRF

References (1)

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

Link	Providers	Tags
https://distributedcompute.com/2017/11/04/vonage-ht802-multiple-vulnerabilities/		x_refsource_MISCExploitThird Party Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Nov 6, 2017

Updated Aug 5, 2024

Reserved Nov 6, 2017

Link CVE-2017-16565

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2017-16565

Red Hat

Severity n/a

Public date n/a

Links CVE-2017-16565