---
id: CVE-2024-20398
title: Cisco IOS XR Software Local Privilege Escalation Vulnerability
summary: "A vulnerability in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker to obtain read/write file system access on the underlying operating system of an affected device.\r\n\r\nThis vulnerability is due to insufficient…"
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'
cvssSource: vendor
vendor: Cisco
product: Cisco IOS XR Software
affected:
  - ios_xr_software
published: '2024-09-11'
updated: '2024-09-11'
sourceUpdated: '2024-09-11T16:00:00+00:00'
source: CSAF
sourceUrl: >-
  https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-priv-esc-CrG5vhCq
references:
  - url: >-
      https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-priv-esc-CrG5vhCq
  - url: 'https://software.cisco.com'
tags:
  - csaf
  - vendor-advisory
  - cisco
epss: 0.00212
epssPercentile: 0.10395
ingestedAt: '2026-10-03T07:59:32.845Z'
---

## Overview

A vulnerability in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker to obtain read/write file system access on the underlying operating system of an affected device.

This vulnerability is due to insufficient validation of user arguments that are passed to specific CLI commands. An attacker with a low-privileged account could exploit this vulnerability by using crafted commands at the prompt. A successful exploit could allow the attacker to elevate privileges to root.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.



This advisory is part of the September 2024 release of the Cisco IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: September 2024 Semiannual Cisco IOS XR Software Security Advisory Bundled Publication ["https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-75416"].

## Vendor advisories

- **cisco-sa-iosxr-priv-esc-CrG5vhCq** · Cisco · affected: Cisco IOS XR Software · updated 2024-09-11 · [advisory](https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-priv-esc-CrG5vhCq)

**Cisco IOS XR Software CLI Privilege Escalation Vulnerability**. Released 2024-09-11.

Affected:

- Cisco IOS XR Software

## Remediation

Cisco has released software updates that address this vulnerability. https://software.cisco.com