---
id: CVE-2026-20286
title: "A vulnerability in the web-based management interface of Cisco Identify Services Engine (ISE) could allow an authenticated, remote attacker to modify parts of the configuration on an affected device.\r\n\r\nThis vulnerability is due to the l…"
summary: "A vulnerability in the web-based management interface of Cisco Identify Services Engine (ISE) could allow an authenticated, remote attacker to modify parts of the configuration on an affected device.\r\n\r\nThis vulnerability is due to the l…"
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-285
vendor: Cisco
product: Cisco Identity Services Engine Software
affected:
  - identity_services_engine_software 3.1.0
  - identity_services_engine_software 3.1.0 p1
  - identity_services_engine_software 3.1.0 p3
  - identity_services_engine_software 3.1.0 p2
  - identity_services_engine_software 3.2.0
  - identity_services_engine_software 3.1.0 p4
  - identity_services_engine_software 3.1.0 p5
  - identity_services_engine_software 3.2.0 p1
  - identity_services_engine_software 3.1.0 p6
  - identity_services_engine_software 3.2.0 p2
  - identity_services_engine_software 3.1.0 p7
  - identity_services_engine_software 3.3.0
  - identity_services_engine_software 3.2.0 p3
  - identity_services_engine_software 3.2.0 p4
  - identity_services_engine_software 3.1.0 p8
  - identity_services_engine_software 3.2.0 p5
  - identity_services_engine_software 3.2.0 p6
  - identity_services_engine_software 3.1.0 p9
  - identity_services_engine_software 3.3 Patch 2
  - identity_services_engine_software 3.3 Patch 1
  - identity_services_engine_software 3.3 Patch 3
  - identity_services_engine_software 3.4.0
  - identity_services_engine_software 3.2.0 p7
  - identity_services_engine_software 3.3 Patch 4
  - identity_services_engine_software 3.4 Patch 1
  - identity_services_engine_software 3.1.0 p10
  - identity_services_engine_software 3.3 Patch 5
  - identity_services_engine_software 3.3 Patch 6
  - identity_services_engine_software 3.4 Patch 2
  - identity_services_engine_software 3.3 Patch 7
  - identity_services_engine_software 3.4 Patch 3
  - identity_services_engine_software 3.5.0
  - identity_services_engine_software 3.4 Patch 4
  - identity_services_engine_software 3.3 Patch 8
  - identity_services_engine_software 3.2 Patch 8
  - identity_services_engine_software 3.5 Patch 1
  - identity_services_engine_software 3.3 Patch 9
  - identity_services_engine_software 3.2 Patch 9
  - identity_services_engine_software 3.4 Patch 5
  - identity_services_engine_software 3.5 Patch 3
  - identity_services_engine_software 3.5 Patch 2
  - identity_services_engine_software 3.3 Patch 10
  - identity_services_engine_software 3.3 Patch 11
  - identity_services_engine_software 3.4 Patch 6
  - identity_services_engine_software 3.2 Patch 10
  - identity_services_engine_software 3.1.0 p72
  - identity_services_engine_software 3.1.0 p11
  - identity_services_engine_software 3.1.0 p12
  - identity_services_engine_software 3.2 Patch 11
published: '2026-09-16'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T13:28:28.567'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-20286'
references:
  - url: >-
      https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-auth-bypass-1-MxcTNgwx
    label: psirt@cisco.com
  - url: 'https://software.cisco.com'
tags:
  - nvd
  - cve.org
  - csaf
  - vendor-advisory
  - cisco
epss: 0.00357
epssPercentile: 0.29546
ingestedAt: '2026-09-16T16:37:52.170Z'
---

## Overview

A vulnerability in the web-based management interface of Cisco Identify Services Engine (ISE) could allow an authenticated, remote attacker to modify parts of the configuration on an affected device.

This vulnerability is due to the lack of server-side validation of Administrator permissions. An attacker could exploit this vulnerability by submitting a crafted HTTP request to an affected system. A successful exploit could allow the attacker to modify descriptions of files on a specific page. To exploit this vulnerability, an attacker would need valid Administrator credentials.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **cisco-sa-ise-auth-bypass-1-MxcTNgwx** · Cisco · affected: Cisco Identity Services Engine Software (48 versions) · updated 2026-09-16 · [advisory](https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-auth-bypass-1-MxcTNgwx)