TI-2020-13371 Aliases CVE-2020-18331 GHSA-w48q-2q3f-h2f8

Directory traversal vulnerability in ChinaMobile PLC Wireless Router model GPN2.4P21-C-CN…

HIGH 80CWE-22Published 2023-01-25 · Updated 2025-04-01

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

Directory traversal vulnerability in ChinaMobile PLC Wireless Router model GPN2.4P21-C-CN running the firmware version W2000EN-01(hardware platform Gpn2.4P21-C_WIFI-V0.05), via the getpage parameter to /cgi-bin/webproc.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.01317 70th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:chinamobileltd:gpn2.4p21-c-cn_firmware:w2000en-01:::::::*	w2000en-01	Vulnerable	Chinamobileltd
cpe:2.3:h:chinamobileltd:gpn2.4p21-c-cn:0.05:::::::*	0.05	Running on	Chinamobileltd

cpe:2.3:o:chinamobileltd:gpn2.4p21-c-cn_firmware:w2000en-01:*:*:*:*:*:*:* Versions w2000en-01 Vulnerable ·Chinamobileltd
cpe:2.3:h:chinamobileltd:gpn2.4p21-c-cn:0.05:*:*:*:*:*:*:* Versions 0.05 Running on ·Chinamobileltd

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-18331
2026-10-03 Alias added: GHSA-w48q-2q3f-h2f8

References

Exploit 1

https://github.com/cybertoxin/CVEs/blob/main/CVE_2020_18331.md

Other 1

https://medium.com/%40SergiuSechel/insecure-permissions-and-multiple-vulnerabilities-in-chinamobile-plc-wireless-routers-leaves-more-d3eb9ff70d24

TI-2020-13370 An issue was discovered in the default configuration of ChinaMobile PLC Wireless Router… CVSS 3.1CRITICAL 9.1
TI-2019-04468 ChinaMobile PLC Wireless Router GPN2.4P21-C-CN devices with firmware W2001EN-00 have an… CVSS 3.0HIGH 8.8
TI-2019-04469 ChinaMobile PLC Wireless Router GPN2.4P21-C-CN devices with firmware W2001EN-00 have CSRF… CVSS 3.0HIGH 8.8
TI-2019-15985 Missing authentication in China Mobile GPN2.4P21-C-CN CVSS 3.0HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences