CVE-2020-18331

Name: CVE-2020-18331
Creator: NVD / NIST
Published: 2023-01-26T21:15:19.08+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 1.30%

Last modified Jun 17, 2026

CVE-2020-18331 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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.. EPSS estimates a 1.30% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

9.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS Probability

1.30%

66.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Chinamobileltd	Gpn2.4p21-C-Cn Firmware	w2000en-01

References

Timeline

Published: Jan 26, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-18331?

How severe is CVE-2020-18331?

CVE-2020-18331 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 1.30% probability of exploitation in the next 30 days.

How do I fix CVE-2020-18331?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-18331?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST