CVE-2025-20124

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.9 CRITICAL
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:H
ciscoCNA
9.9 CRITICAL
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:H
CISA-ADPADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 33%
VendorProductVersion
ciscoidentity_services_engine
𝑥
< 3.1
ciscoidentity_services_engine
3.1.0
ciscoidentity_services_engine
3.1.0:patch1
ciscoidentity_services_engine
3.1.0:patch2
ciscoidentity_services_engine
3.1.0:patch3
ciscoidentity_services_engine
3.1.0:patch4
ciscoidentity_services_engine
3.1.0:patch5
ciscoidentity_services_engine
3.1.0:patch6
ciscoidentity_services_engine
3.1.0:patch7
ciscoidentity_services_engine
3.1.0:patch8
ciscoidentity_services_engine
3.1.0:patch9
ciscoidentity_services_engine
3.2.0
ciscoidentity_services_engine
3.2.0:patch1
ciscoidentity_services_engine
3.2.0:patch2
ciscoidentity_services_engine
3.2.0:patch3
ciscoidentity_services_engine
3.2.0:patch4
ciscoidentity_services_engine
3.2.0:patch5
ciscoidentity_services_engine
3.2.0:patch6
ciscoidentity_services_engine
3.3.0
ciscoidentity_services_engine
3.3.0:patch1
ciscoidentity_services_engine
3.3.0:patch2
ciscoidentity_services_engine
3.3.0:patch3
𝑥
= Vulnerable software versions