CVE-2018-0221 Command injection in Cisco Identity Services Engine
Authenticated local attackers with admin credentials can inject commands into the underlying OS or cause session hangs via flawed CLI input validation.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-0221?
CVE-2018-0221 is a medium-severity command injection vulnerability in Cisco Identity Services Engine, published on 8 Mar 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability in specific CLI commands for the Cisco Identity Services Engine (ISE) could allow an authenticated, local attacker to perform command injection to the underlying operating system or cause a hang or disconnect of the user session. The attacker needs valid administrator credentials for the device. The vulnerability is due to incomplete input validation of user input for certain CLI ISE configuration commands. An attacker could exploit this vulnerability by authenticating as an administrative user, issuing a specific CLI command, and entering crafted, malicious user input for the command parameters. An exploit could allow the attacker to perform command injection to the lower-level Linux operating system. It is also possible the attacker could cause the ISE user interface for this management session to hang or disconnect. Cisco Bug IDs: CSCvg95479.
Weakness: CWE-78
Which versions are affected by CVE-2018-0221?
It affects 1 product.
Products include Cisco Identity Services Engine.
How do I fix CVE-2018-0221?
No fix has been published for CVE-2018-0221 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2018-0221 being exploited?
There is no known exploitation of CVE-2018-0221 in the wild and no public exploit code.
Other vulnerabilities in Cisco Identity Services Engine
- CVE-2026-76460 Cisco Identity Services Engine Incorrect Use of Privileged APIs
- CVE-2025-20337 Cisco Identity Services Engine Injection
- CVE-2025-20281 Cisco Identity Services Engine Injection
- CVE-2026-20130 Cisco Identity Services Engine Hardening Release - Improper Neutralization Vulnerabilities
- CVE-2026-20192 Cisco Identity Services Engine Hardening Release - Access Control Vulnerabilities
Sources
Also known as GHSA-g4f6-m2vq-p28h.