Rapid7 Vulnerability & Exploit Database

Cisco XE: CVE-2021-34699: Cisco IOS and IOS XE Software TrustSec CLI Parser Denial of Service Vulnerability

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Cisco XE: CVE-2021-34699: Cisco IOS and IOS XE Software TrustSec CLI Parser Denial of Service Vulnerability

Severity
7
CVSS
(AV:N/AC:L/Au:S/C:N/I:N/A:C)
Published
09/23/2021
Created
01/19/2022
Added
01/18/2022
Modified
02/23/2024

Description

A vulnerability in the TrustSec CLI parser of Cisco IOS and Cisco IOS XE Software could allow an authenticated, remote attacker to cause an affected device to reload. This vulnerability is due to an improper interaction between the web UI and the CLI parser. An attacker could exploit this vulnerability by requesting a particular CLI command to be run through the web UI. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition.

Solution(s)

  • cisco-xe-upgrade-latest

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