CVE-2021-28171

CRITICALNVD 9.89.8—

9.8

The Vangene deltaFlow E-platform does not take properly protective measures. Attackers can obtain privileged permissions remotely by tampering with users’ data in the Cookie.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 51.0%
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-132-4618-4dcc2-1.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-132-4618-4dcc2-1.html

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 7× 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.

2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 18:42 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-2021-28171?

CVE-2021-28171 is a critical vulnerability published on April 6, 2021. The Vangene deltaFlow E-platform does not take properly protective measures. Attackers can obtain privileged permissions remotely by tampering with users’ data in the Cookie.

When was CVE-2021-28171 disclosed?

CVE-2021-28171 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-2021-28171 actively exploited?

CVE-2021-28171 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 51.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-28171?

CVE-2021-28171 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2021-28171?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-28171, 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-2021-28171

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Is Your Infrastructure Affected by CVE-2021-28171?

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CVE-2021-28171

📅 Published

🔄 Last Modified

🔗 References (4)