CVE-2021-40396
First published: Fri Jan 28 2022(Updated: )
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.
Credit: talos-cna@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Advantech Deviceon\/iservice | =1.1.7 |
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Frequently Asked Questions
What is CVE-2021-40396?
CVE-2021-40396 is a privilege escalation vulnerability in the installation of Advantech DeviceOn/iService 1.1.7.
What is the severity of CVE-2021-40396?
CVE-2021-40396 has a severity value of 8.8, which is classified as high.
How does CVE-2021-40396 work?
CVE-2021-40396 allows an attacker to replace a system file with a specially-crafted file, which escalates privileges to NT SYSTEM authority.
How can an attacker exploit CVE-2021-40396?
An attacker can provide a malicious file to trigger CVE-2021-40396 and escalate privileges on the system.
Is there a fix for CVE-2021-40396?
At the moment, there is no specific fix available for CVE-2021-40396. It is recommended to follow the vendor's security advisories for updates or patches.
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