CVE-2019-5620

CRITICALNVD 9.89.8—Weaponized

9.8

ABB MicroSCADA Pro SYS600 version 9.3 suffers from an instance of CWE-306: Missing Authentication for Critical Function.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 99.1%
KEV: Not listed

Published

April 29, 2020

Last Modified

November 21, 2024

References (2)

cve@rapid7https://www.rapid7.com/db/modules/exploit/windows/scada/abb_wserver_exec
af854a3a-2127-422b-91ae-364da2661108https://www.rapid7.com/db/modules/exploit/windows/scada/abb_wserver_exec

Weakness Classification(1)

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

CWE-306Missing Authentication for Critical Function

Data Freshness Timeline

(refreshed 7× in last 7d / 12× 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.

2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 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 04:03 UTCEG score recompute
2026-05-27 04:03 UTCGHSA enrichment
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Metasploit module). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Metasploitexploit/windows/scada/abb_wserver_exec✓ verified
First seen Apr 5, 2013
ABB MicroSCADA wserver.exe Remote Code Execution
Open source ↗

Frequently asked(5)

What is CVE-2019-5620?

CVE-2019-5620 is a critical vulnerability published on April 29, 2020. ABB MicroSCADA Pro SYS600 version 9.3 suffers from an instance of CWE-306: Missing Authentication for Critical Function.

When was CVE-2019-5620 disclosed?

CVE-2019-5620 was first published in the National Vulnerability Database on April 29, 2020, 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-2019-5620 actively exploited?

CVE-2019-5620 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2019-5620?

CVE-2019-5620 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2019-5620?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-5620, 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-2019-5620

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2019-5620?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)