CVE-2020-21937

CRITICALNVD 9.89.8—

9.8

An command injection vulnerability in HNAP1/SetWLanApcliSettings of Motorola CX2 router CX 1.0.2 Build 20190508 Rel.97360n allows attackers to execute arbitrary system commands.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 92.8%
KEV: Not listed

Published

July 21, 2021

Last Modified

November 21, 2024

Advisory Details (3)

Auto-updated May 26, 2026

⚠️ Active exploitation confirmed. No patch confirmed yet.

generic

Motorola cx2 vulnerabilities |

https://l0n0l.xyz/post/motocx2/

generic

router/motocx2.md at master · cc-crack/router · GitHub

https://github.com/cc-crack/router/blob/master/motocx2.md

generic🔴 Active Exploitation

CWE - CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') (4.20)

https://cwe.mitre.org/data/definitions/78.html

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 17× 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.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:17 UTCEG score recompute
2026-05-26 13:17 UTCGHSA enrichment
2026-05-24 16:48 UTCepss_batch

Frequently asked(5)

What is CVE-2020-21937?

CVE-2020-21937 is a critical vulnerability published on July 21, 2021. An command injection vulnerability in HNAP1/SetWLanApcliSettings of Motorola CX2 router CX 1.0.2 Build 20190508 Rel.97360n allows attackers to execute arbitrary system commands.

When was CVE-2020-21937 disclosed?

CVE-2020-21937 was first published in the National Vulnerability Database on July 21, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-21937 actively exploited?

CVE-2020-21937 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 92.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-21937?

CVE-2020-21937 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2020-21937?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-21937, 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.

Dependency Blast Radius

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CVE-2020-21937

📅 Published

🔄 Last Modified

📋 Advisory Details (3)