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TI-2020-10633 Aliases CVE-2020-13555GHSA-p5fj-p4px-rj6r

Incorrect default permissions in Advantech

Priority LOW 39CWE-276Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

An exploitable local privilege elevation vulnerability exists in the file system permissions of Advantech WebAccess/SCADA 9.0.1 installation. In COM Server Application Privilege Escalation, an attacker can either replace binary or loaded modules to execute code with NT SYSTEM privilege.

Why it matters now

EPSS 0.00504 43rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
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
—AdvantechAdvantech WebAccess/SCADA 9.0.1—No fix listedCNA
  • Advantech Vendor— Affected Advantech WebAccess/SCADA 9.0.1 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:advantech:webaccess\/scada:9.0.1:*:*:*:*:*:*:*9.0.1VulnerableAdvantech
  • cpe:2.3:a:advantech:webaccess\/scada:9.0.1:*:*:*:*:*:*:* Versions 9.0.1 Vulnerable ·Advantech

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-13555
  2. 2026-10-03 Alias added: GHSA-p5fj-p4px-rj6r

References

Exploit 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-2021-12552 Stack-based buffer overflow in WebAccess/SCADA CVSS 3.1CRITICAL 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
See all 28 →

Sources

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