CVE-2023-20166 Cisco Identity Services Engine Path Traversal Vulnerabilities
Authenticated administrators can exploit path traversal in Cisco ISE to read arbitrary files or escalate privileges to root.
- 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-2023-20166?
CVE-2023-20166 is a medium-severity path traversal vulnerability in Cisco Identity Services Engine, published on 18 May 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Multiple vulnerabilities in Cisco Identity Services Engine (ISE) could allow an authenticated attacker to perform path traversal attacks on the underlying operating system to either elevate privileges to root or read arbitrary files. To exploit these vulnerabilities, an attacker must have valid Administrator credentials on the affected device. For more information about these vulnerabilities, see the Details section of this advisory.
Which versions are affected by CVE-2023-20166?
It affects 1 product.
Products include Cisco Identity Services Engine.
How do I fix CVE-2023-20166?
No fix has been published for CVE-2023-20166 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2023-20166 being exploited?
There is no known exploitation of CVE-2023-20166 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-h4h6-v7j3-3gh5.