CVE-2025-20124
Cisco Identity Services Engine Java Deserialization Vulnerability
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.
Weakness: CWE-502
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco ISE Passive Identity Connector | Identity / IAM / MFA | cna-assigner |
| Cisco | Cisco Identity Services Engine (ISE) Check your version | Identity / IAM / MFA | cna-assigner |
Vendor-reported products (2)
- Cisco · Cisco Identity Services Engine Software
- Cisco · Cisco ISE Passive Identity Connector
Vendor advisory
cisco-sa-ise-multivuls-FTW9AOXF
Cisco Identity Services Engine Insecure Java Deserialization and Authorization Bypass Vulnerabilities
Cisco’s rating: Critical (advisory CVSS 9.9) · Published Feb 5, 2025 · updated Feb 10, 2025 (revision 1.2)
Bug IDs: CSCwk14901 , CSCwk14916
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from