TI-2021-17460 Aliases CVE-2021-40396 GHSA-3x57-7r9m-7xwv

A privilege escalation vulnerability exists in the installation of Advantech…

HIGH 73CWE-276Published 2022-01-28 · Updated 2025-04-15

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/iService 1.1.7. 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

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:advantech:deviceon\/iservice:1.1.7:::::::*	1.1.7	Vulnerable	Advantech

cpe:2.3:a:advantech:deviceon\/iservice:1.1.7:*:*:*:*:*:*:* Versions 1.1.7 Vulnerable ·Advantech

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-40396
2026-10-03 Alias added: GHSA-3x57-7r9m-7xwv

References

Exploit 1

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1408

Sources

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