ChinaMobile PLC Wireless Router GPN2.4P21-C-CN var:subpage cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability was found in ChinaMobile PLC Wireless Router GPN2.4P21-C-CN (Router Operating System) and classified as problematic. This issue affects an unknown functionality of the file cgi-bin/webproc?getpage=html/index.html. The manipulation of the argument var:subpage as part of a Parameter leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

ChinaMobile PLC Wireless Router GPN2.4P21-C-CN devices with firmware W2001EN-00 have XSS via the cgi-bin/webproc?getpage=html/index.html var:subpage parameter.

The bug was discovered 12/25/2018. The weakness was presented 01/02/2019 (Website). The advisory is shared at The identification of this vulnerability is CVE-2018-20326 since 12/21/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

The exploit is available at It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 8 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:cgi-bin/webproc?getpage=html/index.html it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Exploit-DB (46081). See VDB-132012, VDB-132013 and VDB-226133 for similar entries.






CPE 2.3info

CPE 2.2info


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VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
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NVD Base Score: 6.1
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Class: Cross site scripting
CWE: CWE-79 / CWE-74 / CWE-707

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍
Google Hack: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍


12/21/2018 🔍
12/25/2018 +4 days 🔍
01/02/2019 +8 days 🔍
01/02/2019 +0 days 🔍
01/03/2019 +1 days 🔍
06/22/2023 +1631 days 🔍


Advisory: 150918
Status: Not defined

CVE: CVE-2018-20326 (🔍)
scip Labs:
See also: 🔍


Created: 01/03/2019 12:49 PM
Updated: 06/22/2023 06:13 PM
Changes: 01/03/2019 12:49 PM (59), 04/25/2020 06:43 PM (5), 06/22/2023 06:13 PM (4)
Complete: 🔍
Cache ID: 34:6E8:40


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