Deserialization of untrusted data in Cisco Identity Services Engine (ISE) - CVE-2025-20124
Published: February 5, 2025 / Updated: June 20, 2025
Vulnerability identifier: #VU103657
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2025-20124
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: Cisco Systems, Inc
Affected software:
Cisco Identity Services Engine (ISE)
Cisco Identity Services Engine (ISE)
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary code on the target system.
The vulnerability exists due to insecure input validation when processing serialized data. A remote user with read-only administrative credentials can send a specially crafted HTTP request to the affected API endpoint and execute arbitrary code on the target system with root privileges.
How to mitigate CVE-2025-20124
Install updates from vendor's website.