CVE-2020-20601

CRITICALNVD 9.89.8—Elevated

9.8

An issue in ThinkCMF X2.2.2 and below allows attackers to execute arbitrary code via a crafted packet.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 98.2%
KEV: Not listed

Published

December 22, 2021

Last Modified

November 21, 2024

References (2)

Weakness Classification(2)

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

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)
CWE-94Improper Control of Generation of Code (Code Injection)

Data Freshness Timeline

(refreshed 12× 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.

2026-06-06 13:45 UTCepss_batch
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2026-05-31 00:15 UTCepss_batch
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2026-05-29 13:42 UTCepss_batch
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Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Nucleihttp/cves/2020/CVE-2020-20601.yaml
First seen Jan 1, 2020
ThinkCMF X2.2.2 - Remote Code Execution
Open source ↗

Frequently asked(5)

What is CVE-2020-20601?

CVE-2020-20601 is a critical vulnerability published on December 22, 2021. An issue in ThinkCMF X2.2.2 and below allows attackers to execute arbitrary code via a crafted packet.

When was CVE-2020-20601 disclosed?

CVE-2020-20601 was first published in the National Vulnerability Database on December 22, 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-2020-20601 actively exploited?

CVE-2020-20601 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-20601?

CVE-2020-20601 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2020-20601?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-20601, 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-2020-20601

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(2)

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-20601?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)