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Vulnerability record · CVE-2017-3216 · published 20 June 2017

CVE-2017-3216: Greenpacket ox350 firmware missing authentication for critical function vulnerability

Greenpacket · Ox350 Firmware

WiMAX routers based on the MediaTek SDK (libmtk) that use a custom httpd plugin are vulnerable to an authentication bypass allowing a remote, unauthenticated attacker to gain administrator access to the device by performing an administrator password change on the device via a crafted POST request.

9.8 CVSS 3.0 Critical EPSS 5.2% · top 7.8% CWE-306 · Missing authentication for critical function
9.8CVSS 3.0 base score, v2 10.0
5.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
14Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

WiMAX routers based on the MediaTek SDK (libmtk) that use a custom httpd plugin are vulnerable to an authentication bypass allowing a remote, unauthenticated attacker to gain administrator access to the device by performing an administrator password change on the device via a crafted POST request.

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

Affected products

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

References

LinkTags
http://blog.sec-consult.com/2017/06/ghosts-from-past-authentication-bypass.html Third Party Advisory
http://www.kb.cert.org/vuls/id/350135 MitigationThird Party AdvisoryUS Government Resource
https://sec-consult.com/fxdata/seccons/prod/temedia/advisories_txt/20170607-0_Various_WiMAX_CPEs_Authentication_Bypass_v ExploitThird Party Advisory
http://blog.sec-consult.com/2017/06/ghosts-from-past-authentication-bypass.html Third Party Advisory
http://www.kb.cert.org/vuls/id/350135 MitigationThird Party AdvisoryUS Government Resource
https://sec-consult.com/fxdata/seccons/prod/temedia/advisories_txt/20170607-0_Various_WiMAX_CPEs_Authentication_Bypass_v ExploitThird Party Advisory

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

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Source: NIST National Vulnerability Database (record CVE-2017-3216), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.