TI-2021-16034 Aliases CVE-2021-38431 GHSA-pvmh-mh74-89p6

Missing authorization in Advantech WebAccess SCADA

LOW 21CWE-862Published 2021-10-15 · Updated 2024-09-16

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: Low · None · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

An authenticated user using Advantech WebAccess SCADA in versions 9.0.3 and prior can use API functions to disclose project names and paths from other users.

Why it matters now

EPSS 0.00698 53rd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Advantech	WebAccess SCADA	All – 9.0.3	—	No fix listed	CNA

WebAccess SCADA VendorAdvantech Affected All – 9.0.3 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:advantech:webaccess_scada::::::::	up to 9.0.3	Vulnerable	Advantech

cpe:2.3:a:advantech:webaccess_scada:*:*:*:*:*:*:*:* Versions up to 9.0.3 Vulnerable ·Advantech

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-38431
2026-10-03 Alias added: GHSA-pvmh-mh74-89p6

References

Advisory 1

https://us-cert.cisa.gov/ics/advisories/icsa-21-285-01

TI-2018-06387 Heap-based buffer overflow in Advantech WebAccess CVSS 3.1CRITICAL 9.8
TI-2018-07478 Path traversal in Advantech WebAccess CVSS 3.0CRITICAL 9.8
TI-2018-05408 Stack-based buffer overflow in Advantech WebAccess CVSS 3.1CRITICAL 9.8
TI-2018-05414 Access control flaw in Advantech WebAccess CVSS 3.0CRITICAL 9.8
TI-2018-05406 NULL pointer dereference in Advantech WebAccess CVSS 3.0CRITICAL 9.8
TI-2018-05412 Path traversal in Advantech WebAccess CVSS 3.0HIGH 7.5

See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences