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CVE-2021-34724

MEDIUM CVSS: 6.0 Published: 2021-09-23 Modified: 2026-06-17

Description

A vulnerability in the Cisco IOS XE SD-WAN Software CLI could allow an authenticated, local attacker to elevate privileges and execute arbitrary code on the underlying operating system as the root user. An attacker must be authenticated on an affected device as a PRIV15 user. This vulnerability is due to insufficient file system protection and the presence of a sensitive file in the bootflash directory on an affected device. An attacker could exploit this vulnerability by overwriting an installer file stored in the bootflash directory with arbitrary commands that can be executed with root-level privileges. A successful exploit could allow the attacker to read and write changes to the configuration database on the affected device.

Affected Platforms

Cisco 1100-8P Integrated Services RouterCisco Asr 1001Cisco 1101 Integrated Services RouterCisco Csr 1000VCisco 1100-4G\/6G Integrated Services RouterCisco Asr 1006Cisco Ios Xe Sd-WanCisco Asr 1001-Hx RCisco Asr 1002-HxCisco Asr 1004

Weakness Type

CWE-284, NVD-CWE-Other

References