CVE-2021-1434

MEDIUM

Cisco IOS XE SD-WAN - Privilege Escalation

Title source: llm
STIX 2.1

Description

A vulnerability in the CLI of Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to overwrite arbitrary files in the underlying file system. This vulnerability is due to insufficient validation of the parameters of a specific CLI command. 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 any arbitrary file that resides on the underlying host file system.

References (1)

Core 1
Core References

Scores

CVSS v3 4.4
EPSS 0.0006
EPSS Percentile 17.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-552
Status published
Products (27)
cisco/ios_xe 16.11.1
cisco/ios_xe 16.11.1a
cisco/ios_xe 16.11.1b
cisco/ios_xe 16.11.1c
cisco/ios_xe 16.11.1s
cisco/ios_xe 16.11.2
cisco/ios_xe 16.12.1
cisco/ios_xe 16.12.1a
cisco/ios_xe 16.12.1c
cisco/ios_xe 16.12.1s
... and 17 more
Published Mar 24, 2021
Tracked Since Feb 18, 2026