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Critical · 9.9 Public exploit CVE-2025-20124 EUVD-2025-2152GHSA-4ch8-9r52-j78v

Cisco Identity Services Engine Java Deserialization Vulnerability

Published Feb 5, 2025 · Updated Feb 26, 2026 · Assigned by cisco

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.

Affected products

VendorProductAffectedFixed
Cisco Cisco Identity Services Engine Software 3.0.0, 3.0.0 p1, 3.0.0 p2, 3.0.0 p3, 3.1.0, 3.0.0 p4, 3.1.0 p1, 3.0.0 p5, 3.1.0 p3, 3.1.0 p2, 3.0.0 p6, 3.2.0, 3.1.0 p4, 2.7.0 p8, 3.1.0 p5, 3.2.0 p1, 3.0.0 p7, 3.1.0 p6, 3.2.0 p2, 3.1.0 p7, 3.3.0, 3.2.0 p3, 3.0.0 p8, 3.2.0 p4, 3.1.0 p8, 3.2.0 p5, 3.2.0 p6, 3.1.0 p9, 3.3 Patch 2, 3.3 Patch 1, 3.3 P… —
Cisco Cisco ISE Passive Identity Connector 3.0.0, 3.2.0, 3.1.0, 3.3.0 —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Exploit-DB 1

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 2

References