CVE-2025-20124CWE-502

Cisco Identity Services Engine Java Deserialization Vulnerability

Critical · published February 5, 2025

CVSS v3.1
9.9
EPSS
18%
Percentile
97.2
In the wild
Unconfirmed
What it is

🔥 An authenticated attacker could take complete control of your Cisco ISE device with a single malicious Java object! Think of it like a trusted guest at a fancy restaurant who slips a forged order into the kitchen, causing the chef to prepare anything on the menu — complete chaos ensues! 🍽️ With the ability to execute arbitrary commands as root, an attacker can change configurations, access sensitive data, and potentially cripple the entire system. This is absolutely devastating for any organization relying on Cisco ISE for network security!

Put simply

Think of it like a trusted guest at a fancy restaurant who slips a forged order into the kitchen, causing the chef to prepare anything on the menu — complete chaos ensues! 🍽️ This vulnerability arises from the insecure deserialization of user-supplied Java byte streams, allowing an attacker with valid read-only administrative credentials to exploit the API by sending a crafted serialized Java object.

What to do

With the ability to execute arbitrary commands as root, an attacker can change configurations, access sensitive data, and potentially cripple the entire system. This is absolutely devastating for any organization relying on Cisco ISE for network security! To protect your devices, immediately patch to the latest version provided by Cisco. Ensure that your administrative credentials are secure and consider rotating them regularly to limit the risk of exploitation. 🛡️ You've got this! Stay vigilant and act quickly to secure your systems! 💪✨

The record
Technical detail
CVSS v3.1
9.9 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.18476 · 97.2th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2025-02-05T16:12Z
EPSS history
Timeline
  • 05 FEB 16:12Z
    Cisco Identity Services Engine Java Deserialization Vulnerability
    cvelistv5