CVE-2021-20584

HIGHNVD 7.57.5—

7.5

IBM Sterling File Gateway 2.2.0.0 through 6.1.1.0 could allow a remote attacker to upload arbitrary files, caused by improper access controls. IBM X-Force ID: 199397.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 33.0%
KEV: Not listed

Published

October 7, 2021

Last Modified

November 21, 2024

References (4)

psirt@ushttps://exchange.xforce.ibmcloud.com/vulnerabilities/199397
psirt@ushttps://www.ibm.com/support/pages/node/6496751
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/199397
af854a3a-2127-422b-91ae-364da2661108https://www.ibm.com/support/pages/node/6496751

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 10× 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
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2026-05-26 09:20 UTCEG score recompute
2026-05-26 09:20 UTCGHSA enrichment
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2026-05-24 16:49 UTCepss_batch

Frequently asked(5)

What is CVE-2021-20584?

CVE-2021-20584 is a high vulnerability published on October 7, 2021. IBM Sterling File Gateway 2.2.0.0 through 6.1.1.0 could allow a remote attacker to upload arbitrary files, caused by improper access controls. IBM X-Force ID: 199397.

When was CVE-2021-20584 disclosed?

CVE-2021-20584 was first published in the National Vulnerability Database on October 7, 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-2021-20584 actively exploited?

CVE-2021-20584 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 33.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-20584?

CVE-2021-20584 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2021-20584?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-20584, 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-2021-20584

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-20584?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (4)

Frequently asked(5)

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