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TI-2021-17454 Aliases CVE-2021-40389GHSA-fgfr-mpqv-pfv7

A privilege escalation vulnerability exists in the installation of Advantech…

Priority HIGH 73CWE-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

A privilege escalation vulnerability exists in the installation of Advantech DeviceOn/iEdge Server 1.0.2. A specially-crafted file can be replaced in the system to escalate privileges to NT SYSTEM authority. An attacker can provide a malicious file to trigger this vulnerability.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00365 30th 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

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:advantech:deviceon\/iedge:1.0.2:*:*:*:*:*:*:*1.0.2VulnerableAdvantech
  • cpe:2.3:a:advantech:deviceon\/iedge:1.0.2:*:*:*:*:*:*:* Versions 1.0.2 Vulnerable ·Advantech

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-40389
  2. 2026-10-03 Alias added: GHSA-fgfr-mpqv-pfv7

References

Exploit 1

  • TI-2025-36768 Advantech DeviceOn/iEdge Path Traversal CVSS 4.0HIGH 8.7
  • TI-2025-38841 Advantech DeviceOn/iEdge Path Traversal CVSS 4.0HIGH 8.7
  • TI-2025-36184 Advantech DeviceOn/iEdge Path Traversal CVSS 4.0HIGH 8.7
  • TI-2025-39741 Advantech DeviceOn/iEdge Cross-site Scripting CVSS 4.0MEDIUM 5.3

Sources

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