CVE-2021-28173

CRITICALNVD 9.89.8—

9.8

The file upload function of Vangene deltaFlow E-platform does not perform access controlled properly. Remote attackers can upload and execute arbitrary files without login.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 73.4%
KEV: Not listed

Published

April 6, 2021

Last Modified

November 21, 2024

References (4)

twcert@certhttps://www.chtsecurity.com/news/7f0874b5-516b-4637-842d-b6fb6c335c66
twcert@certhttps://www.twcert.org.tw/tw/cp-132-4620-58f9c-1.html
af854a3a-2127-422b-91ae-364da2661108https://www.chtsecurity.com/news/7f0874b5-516b-4637-842d-b6fb6c335c66
af854a3a-2127-422b-91ae-364da2661108https://www.twcert.org.tw/tw/cp-132-4620-58f9c-1.html

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 / 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.

2026-06-04 13:10 UTCepss_batch
2026-06-04 13:10 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
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
2026-05-29 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
2026-05-27 13:39 UTCepss_batch
2026-05-26 18:41 UTCEG score recompute
2026-05-26 18:41 UTCGHSA enrichment
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2021-28173?

CVE-2021-28173 is a critical vulnerability published on April 6, 2021. The file upload function of Vangene deltaFlow E-platform does not perform access controlled properly. Remote attackers can upload and execute arbitrary files without login.

When was CVE-2021-28173 disclosed?

CVE-2021-28173 was first published in the National Vulnerability Database on April 6, 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-2021-28173 actively exploited?

CVE-2021-28173 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 73.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-28173?

CVE-2021-28173 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2021-28173?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-28173, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-28173

Explore →

Is Your Infrastructure Affected by CVE-2021-28173?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2021-28173

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-28173?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (4)

Frequently asked(5)

Related CVEs(same CWE)