CyberCVE

CVE-2026-20245

Cisco Catalyst SD-WAN Controller Authenticated Privilege Escalation Vulnerability

Severity
High 7.8
CVSS 3.1
Exploited
Yes — in CISA KEV
Added Jun 9, 2026
EPSS
0.253
97.7th percentile
Discovered by
Vendor
Published by the vendor
Published
Jun 4, 2026
Assigned by cisco

Description

A vulnerability in the CLI of Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, and Cisco Catalyst SD-WAN Validator, formerly SD-WAN vBond, could allow an authenticated, local attacker to execute arbitrary commands as root by supplying a crafted file to the affected system. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by uploading a crafted file to the affected system. A successful exploit could allow the attacker to perform command injection attacks on an affected system and elevate their privileges as the root user. To exploit this vulnerability, the attacker must have netadmin privileges on the affected system. This would require valid credentials or exploitation of or . Cisco is not aware of successful exploitation by other methods. Cisco has observed limited cases where the exploitation of this bug resulted in a configuration change pushed to edge devices. Cisco recommends that customers upgrade to the fixed software that is documented in the that was published on May 14, 2026, and verify the configuration of the edge devices.

Weakness: CWE-116

Affected products

Vendor Product Category Matched by
Cisco Cisco Catalyst SD-WAN Manager Network & Security Management cna-assigner
Vendor-reported affected versions (2)
  • Cisco · Cisco Catalyst SD-WAN Controller
  • Cisco · Cisco Catalyst SD-WAN Manager

References