CVE-2019-6521

HIGHNVD 8.68.6—

8.6

WebAccess/SCADA, Version 8.3. Specially crafted requests could allow a possible authentication bypass that could allow an attacker to obtain and manipulate sensitive information.

CVSS v3: 8.6
EG Score: 8.6(medium)
EPSS: 82.4%
KEV: Not listed

Published

February 5, 2019

Last Modified

November 21, 2024

References (4)

ics-cert@hqhttp://www.securityfocus.com/bid/106722
ics-cert@hqhttps://ics-cert.us-cert.gov/advisories/ICSA-19-024-01
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/106722
af854a3a-2127-422b-91ae-364da2661108https://ics-cert.us-cert.gov/advisories/ICSA-19-024-01

Weakness Classification(1)

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

CWE-287Improper Authentication

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.

2026-06-05 06:08 UTCepss_batch
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
2026-06-01 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 00:14 UTCepss_batch
2026-05-31 00:14 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 22:43 UTCEG score recompute
2026-05-27 22:43 UTCGHSA enrichment
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-24 16:47 UTCepss_batch

Frequently asked(5)

What is CVE-2019-6521?

CVE-2019-6521 is a high vulnerability published on February 5, 2019. WebAccess/SCADA, Version 8.3. Specially crafted requests could allow a possible authentication bypass that could allow an attacker to obtain and manipulate sensitive information.

When was CVE-2019-6521 disclosed?

CVE-2019-6521 was first published in the National Vulnerability Database on February 5, 2019, 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-2019-6521 actively exploited?

CVE-2019-6521 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 82.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2019-6521?

CVE-2019-6521 has a CVSS v3 base score of 8.6 (NVD).

How do I remediate CVE-2019-6521?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-6521, 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-2019-6521

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2019-6521?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (4)

Frequently asked(5)

Related CVEs(same CWE)