CVE-2020-18331

CRITICALNVD 9.19.1—Elevated

9.1

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.

CVSS v3: 9.1
EG Score: 9.1(medium)
EPSS: 75.5%
KEV: Not listed

Published

January 26, 2023

Last Modified

April 1, 2025

References (4)

cve@mitrehttps://github.com/cybertoxin/CVEs/blob/main/CVE_2020_18331.md
cve@mitrehttps://medium.com/%40SergiuSechel/insecure-permissions-and-multiple-vulnerabilities-in-chinamobile-plc-wireless-routers-leaves-more-d3eb9ff70d24
af854a3a-2127-422b-91ae-364da2661108https://github.com/cybertoxin/CVEs/blob/main/CVE_2020_18331.md
af854a3a-2127-422b-91ae-364da2661108https://medium.com/%40SergiuSechel/insecure-permissions-and-multiple-vulnerabilities-in-chinamobile-plc-wireless-routers-leaves-more-d3eb9ff70d24

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-22Path Traversal

Data Freshness Timeline

(refreshed 16× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-07 15:23 UTCepss_batch
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2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch

Frequently asked(5)

What is CVE-2020-18331?

CVE-2020-18331 is a critical vulnerability published on January 26, 2023. 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.

When was CVE-2020-18331 disclosed?

CVE-2020-18331 was first published in the National Vulnerability Database on January 26, 2023, with the most recent update on April 1, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-18331 actively exploited?

CVE-2020-18331 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 75.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-18331?

CVE-2020-18331 has a CVSS v3 base score of 9.1 (NVD).

How do I remediate CVE-2020-18331?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-18331, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2020-18331

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-18331?

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Published

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References (4)

Frequently asked(5)

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