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TI-2021-12552 Aliases CVE-2021-32943GHSA-pg6r-cmxx-v6vf

Stack-based buffer overflow in WebAccess/SCADA

Priority MEDIUM 46CWE-121Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

The affected product is vulnerable to a stack-based buffer overflow, which may allow an attacker to remotely execute arbitrary code on the WebAccess/SCADA (WebAccess/SCADA versions prior to 8.4.5, WebAccess/SCADA versions prior to 9.0.1).

Why it matters now

EPSS 0.0187 79th 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

VendorProductAffected versionsFixed inStatusSource
—WebAccess/SCADAWebAccess/SCADA versions prior to 8.4.5, WebAccess/SCADA versions prior to 9.0.1—No fix listedCNA
  • WebAccess/SCADA Vendor— Affected WebAccess/SCADA versions prior to 8.4.5, WebAccess/SCADA versions prior to 9.0.1 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:advantech:webaccess\/scada:*:*:*:*:*:*:*:*before 8.4.5; 9.0 to before 9.0.1VulnerableAdvantech
  • cpe:2.3:a:advantech:webaccess\/scada:*:*:*:*:*:*:*:* Versions before 8.4.5; 9.0 to before 9.0.1 Vulnerable ·Advantech

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-32943
  2. 2026-10-03 Alias added: GHSA-pg6r-cmxx-v6vf

References

Advisory 1

  • TI-2023-01357 Memory corruption in Advantech WebAccess/SCADA CVSS 3.1CRITICAL 9.8
  • TI-2019-04573 WebAccess/SCADA, Version 8.3. CVSS 3.0CRITICAL 9.8
  • TI-2019-04577 WebAccess/SCADA, Version 8.3. CVSS 3.0CRITICAL 9.8
  • TI-2023-15822 Code injection in Advantech WebAccess/SCADA CVSS 3.1CRITICAL 9.8
  • TI-2023-15909 Unrestricted file upload in Advantech WebAccess/SCADA CVSS 3.1CRITICAL 9.8
  • TI-2025-13544 Advantech WebAccess/SCADA Unrestricted Upload of File with Dangerous Type CVSS 4.0HIGH 8.7
See all 28 →

Sources

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