Detections
Analytics

Cisco Identity Services Engine (cisco-sa-ise-rce-se7bYU57)

critical Nessus Plugin ID 348170

Synopsis

The remote device is missing a vendor-supplied security patch.

Description

According to its self-reported version, Cisco ISE is affected by a vulnerability.

 - A vulnerability in the web-based management interface of Cisco ISE could allow an authenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device. To exploit this vulnerability, the attacker must have at least low-privileged administrative credentials.
 This vulnerability is due to insecure deserialization of a user-supplied Java byte stream. An attacker could exploit this vulnerability by sending a crafted serialized Java object to the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary code on the device and elevate privileges to root. In single-node deployments, successful exploitation of this vulnerability could cause the affected ISE node to become unavailable, resulting in a denial of service (DoS) condition. In that condition, endpoints that have not already authenticated would be unable to access the network until the node is restored. (CVE-2026-20307)

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug IDs CSCws25575, CSCwu26102, CSCwu59400

See Also

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCws25575

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwu26102

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwu59400

http://www.nessus.org/u?09f0905b

Plugin Details

Severity: Critical

ID: 348170

File Name: cisco-sa-ise-rce-se7bYU57_CVE-2026-20307.nasl

Version: 1.1

Type: Local

Family: CISCO

Published: 9/18/2026

Updated: 9/18/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.31

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2026-20307

CVSS v3

Risk Factor: Critical

Base Score: 9.9

Temporal Score: 8.6

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:cisco:identity_services_engine, cpe:/a:cisco:identity_services_engine_software, cpe:/h:cisco:identity_services_engine

Required KB Items: Host/Cisco/ISE/version

Exploit Ease: No known exploits are available

Patch Publication Date: 9/16/2026

Vulnerability Publication Date: 9/16/2026

Reference Information

CVE: CVE-2026-20307