CVE-2021-34723

MEDIUM

Cisco IOS XE SD-WAN - Authenticated Arbitrary File Write via CLI Command

Title source: llm
STIX 2.1

Description

A vulnerability in a specific CLI command that is run on Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to overwrite arbitrary files in the configuration database of an affected device. This vulnerability is due to insufficient validation of specific CLI command parameters. An attacker could exploit this vulnerability by issuing that command with specific parameters. A successful exploit could allow the attacker to overwrite the content of the configuration database and gain root-level access to an affected device.

References (1)

Core 1

Scores

CVSS v3 6.7
EPSS 0.0006
EPSS Percentile 17.2%
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-668
Status published
Products (1)
cisco/ios_xe 17.3.1a
Published Sep 23, 2021
Tracked Since Feb 18, 2026