CVE-2020-18432

CRITICALNVD 9.89.8—

9.8

File Upload vulnerability in SEMCMS PHP 3.7 allows remote attackers to upload arbitrary files and gain escalated privileges.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 71.6%
KEV: Not listed

Published

June 30, 2023

Last Modified

November 21, 2024

References (3)

cve@mitrehttps://vorders.me/2019/03/05/semcms-vulnerablity-before-php-v3-7/#admin-upload-webshell-in-SEMCMS-Upfile-php
nvd@nisthttps://github.com/advisories/GHSA-hg72-f8x2-chjh
af854a3a-2127-422b-91ae-364da2661108https://vorders.me/2019/03/05/semcms-vulnerablity-before-php-v3-7/#admin-upload-webshell-in-SEMCMS-Upfile-php

Weakness Classification(1)

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

CWE-434Unrestricted Upload of File with Dangerous Type

Data Freshness Timeline

(refreshed 11× in last 7d / 19× 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 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-24 22:11 UTCEG score recompute
2026-05-24 22:11 UTCGHSA enrichment
2026-05-24 16:48 UTCepss_batch

Frequently asked(5)

What is CVE-2020-18432?

CVE-2020-18432 is a critical vulnerability published on June 30, 2023. File Upload vulnerability in SEMCMS PHP 3.7 allows remote attackers to upload arbitrary files and gain escalated privileges.

When was CVE-2020-18432 disclosed?

CVE-2020-18432 was first published in the National Vulnerability Database on June 30, 2023, 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-2020-18432 actively exploited?

CVE-2020-18432 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 71.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-18432?

CVE-2020-18432 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2020-18432?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-18432, 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-2020-18432

📅 Published

🔄 Last Modified

🔗 References (3)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-18432?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (3)

Frequently asked(5)

Related CVEs(same CWE)