CVE-2025-20124

CRITICAL

Cisco ISE - Code Injection

Title source: llm
STIX 2.1

Description

A vulnerability in an API of Cisco ISE could allow an authenticated, remote attacker to execute arbitrary commands as the root user on an affected device. This vulnerability is due to insecure deserialization of user-supplied Java byte streams by the affected software. An attacker could exploit this vulnerability by sending a crafted serialized Java object to an affected API. A successful exploit could allow the attacker to execute arbitrary commands on the device and elevate privileges. Note: To successfully exploit this vulnerability, the attacker must have valid read-only administrative credentials. In a single-node deployment, new devices will not be able to authenticate during the reload time.

Exploits (3)

exploitdb WORKING POC
by İbrahimsql · pythonremotemultiple
https://www.exploit-db.com/exploits/52396
nomisec WORKING POC 3 stars
by Yuri08loveElaina · poc
https://github.com/Yuri08loveElaina/CVE-2025-20124_and_CVE-2025-20125
nomisec WORKING POC 1 stars
by ftz7 · poc
https://github.com/ftz7/Cisco-ISE-3.0---Remote-Code-Execution-RCE-

Scores

CVSS v3 9.9
EPSS 0.0830
EPSS Percentile 92.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-502
Status published
Products (4)
cisco/identity_services_engine 3.1.0 (10 CPE variants)
cisco/identity_services_engine 3.2.0 (7 CPE variants)
cisco/identity_services_engine 3.3.0 (4 CPE variants)
cisco/identity_services_engine < 3.1
Published Feb 05, 2025
Tracked Since Feb 18, 2026