CVE-2021-40396 Privilege escalation in n/a
An attacker can escalate privileges to NT SYSTEM authority by replacing a specially-crafted file in Advantech DeviceOn/iService installations.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-40396?
CVE-2021-40396 is a high-severity vulnerability in n/a, published on 28 Jan 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-276
Which versions are affected by CVE-2021-40396?
It affects 1 product.
Products include Advantech Deviceon\/Iservice.
How do I fix CVE-2021-40396?
No fix has been published for CVE-2021-40396 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-40396 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-40396 exists.
Sources
Also known as GHSA-3x57-7r9m-7xwv.