CVE-2021-34729

MEDIUM

Cisco IOS XE and IOS XE SD-WAN < 17.3.1a - Authenticated OS Command Injection via CLI Arguments

Title source: llm
STIX 2.1

Description

A vulnerability in the CLI of Cisco IOS XE SD-WAN Software and Cisco IOS XE Software could allow an authenticated, local attacker to execute arbitrary commands with elevated privileges on an affected device. This vulnerability is due to insufficient validation of arguments passed to certain CLI commands. An attacker could exploit this vulnerability by including malicious input in the argument of an affected command. A successful exploit could allow the attacker to execute arbitrary commands with elevated privileges on the underlying operating system. An attacker would need valid user credentials to exploit this vulnerability.

References (1)

Core 1

Scores

CVSS v3 6.7
EPSS 0.0005
EPSS Percentile 16.6%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-78 CWE-77
Status published
Products (2)
cisco/ios_xe < 17.3.1a
cisco/ios_xe_sd-wan < 17.3.1a
Published Sep 23, 2021
Tracked Since Feb 18, 2026