CVE-2019-3940

CRITICALNVD 9.89.8—

9.8

Advantech WebAccess 8.3.4 is vulnerable to file upload attacks via unauthenticated RPC call. An unauthenticated, remote attacker can use this vulnerability to execute arbitrary code.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 88.2%
KEV: Not listed

Published

April 9, 2019

Last Modified

November 21, 2024

References (4)

vulnreport@tenablehttp://www.securityfocus.com/bid/107847
vulnreport@tenablehttps://www.tenable.com/security/research/tra-2019-15
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/107847
af854a3a-2127-422b-91ae-364da2661108https://www.tenable.com/security/research/tra-2019-15

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 / 18× 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.

2026-06-02 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 20:46 UTCEG score recompute
2026-05-27 20:46 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
2026-05-23 04:04 UTCOSV refresh

Frequently asked(5)

What is CVE-2019-3940?

CVE-2019-3940 is a critical vulnerability published on April 9, 2019. Advantech WebAccess 8.3.4 is vulnerable to file upload attacks via unauthenticated RPC call. An unauthenticated, remote attacker can use this vulnerability to execute arbitrary code.

When was CVE-2019-3940 disclosed?

CVE-2019-3940 was first published in the National Vulnerability Database on April 9, 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-2019-3940 actively exploited?

CVE-2019-3940 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 88.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2019-3940?

CVE-2019-3940 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2019-3940?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-3940, 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-2019-3940

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2019-3940?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (4)

Frequently asked(5)

Related CVEs(same CWE)