---
id: CVE-2025-20293
title: >-
  A vulnerability in the Day One setup process of Cisco IOS XE Software for
  Catalyst 9800 Series Wireless Controllers for Cloud (9800-CL) could allow an
  unauthenticated, remote attacker to access the public-key infrastructure (PKI)
  server …
summary: >-
  A vulnerability in the Day One setup process of Cisco IOS XE Software for
  Catalyst 9800 Series Wireless Controllers for Cloud (9800-CL) could allow an
  unauthenticated, remote attacker to access the public-key infrastructure (PKI)
  server …
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-459
published: '2025-09-24'
updated: '2026-09-26'
sourceUpdated: '2026-09-26T00:10:00.127'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-20293'
references:
  - url: >-
      https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-9800cl-openscep-SB4xtxzP
    label: psirt@cisco.com
tags:
  - nvd
epss: 0.00198
epssPercentile: 0.08613
ingestedAt: '2026-09-26T00:22:39.958Z'
---

## Overview

A vulnerability in the Day One setup process of Cisco IOS XE Software for Catalyst 9800 Series Wireless Controllers for Cloud (9800-CL) could allow an unauthenticated, remote attacker to access the public-key infrastructure (PKI) server that is running on an affected device.

 This vulnerability is due to incomplete cleanup upon completion of the Day One setup process. An attacker could exploit this vulnerability by sending Simple Certificate Enrollment Protocol (SCEP) requests to an affected device. A successful exploit could allow the attacker to request a certificate from the virtual wireless controller and then use the acquired certificate to join an attacker-controlled device to the virtual wireless controller.

## Remediation

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