---
id: CVE-2026-20146
title: >-
  A vulnerability in Cisco Identity Services Engine (ISE) and Cisco ISE Passive
  Identity Connector (ISE-PIC) could allow an authenticated, remote attacker to
  perform path traversal attacks on the underlying operating system to either
  read …
summary: >-
  A vulnerability in Cisco Identity Services Engine (ISE) and Cisco ISE Passive
  Identity Connector (ISE-PIC) could allow an authenticated, remote attacker to
  perform path traversal attacks on the underlying operating system to either
  read …
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N'
cwe:
  - CWE-22
vendor: cisco
product: identity_services_engine_passive_identity_connector
affected:
  - identity_services_engine_passive_identity_connector < 3.3.0
  - identity_services_engine_passive_identity_connector = 3.3.0
  - identity_services_engine_passive_identity_connector = 3.4.0
  - identity_services_engine < 3.3.0
  - identity_services_engine = 3.3.0
  - identity_services_engine = 3.4.0
  - identity_services_engine = 3.5.0
patched:
  - identity_services_engine_passive_identity_connector 3.3.0
  - identity_services_engine 3.3.0
published: '2026-07-15'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T16:41:58.527'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-20146'
references:
  - url: >-
      https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-traversal-xNt7wb2Y
    label: psirt@cisco.com
tags:
  - nvd
epss: 0.00499
epssPercentile: 0.40209
ingestedAt: '2026-09-25T17:13:13.995Z'
---

## Overview

A vulnerability in Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) could allow an authenticated, remote attacker to perform path traversal attacks on the underlying operating system to either read or delete arbitrary files. To exploit this vulnerability, the attacker must have valid administrative credentials.&nbsp;

This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected system. A successful exploit could allow the attacker to access sensitive files or delete arbitrary files on the affected system.

## Affected

- `identity_services_engine_passive_identity_connector < 3.3.0`
- `identity_services_engine_passive_identity_connector = 3.3.0`
- `identity_services_engine_passive_identity_connector = 3.4.0`
- `identity_services_engine < 3.3.0`
- `identity_services_engine = 3.3.0`
- `identity_services_engine = 3.4.0`
- `identity_services_engine = 3.5.0`

## Remediation

Upgrade past the affected range:

- `identity_services_engine_passive_identity_connector 3.3.0`
- `identity_services_engine 3.3.0`