CVE-2026-20245 Cisco Catalyst SD-WAN Manager Improper Encoding or Escaping of Output

Exploited in the wild High 7.8 Published 4 Jun 2026 Updated 21 Jul 2026

Authenticated local attackers with netadmin privileges can execute arbitrary commands as root via crafted file uploads in Cisco Catalyst SD-WAN components.

Exploited in the wild: Since 9 Jun 2026
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-20245?

CVE-2026-20245 is a high-severity command injection vulnerability in Cisco Catalyst Sd-Wan Manager, published on 4 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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

Which versions are affected by CVE-2026-20245?

It affects 2 products.

Products include Cisco Catalyst Sd-Wan Manager, Cisco Sd-Wan Vsmart Controller.

How do I fix CVE-2026-20245?

No fix has been published for CVE-2026-20245 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 23 Jun 2026.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2026-20245 being exploited?

Yes. Attackers have exploited CVE-2026-20245 in the wild since at least 9 Jun 2026.

Public exploit code: 3 proofs of concept on GitHub.

All Cisco Catalyst Sd-Wan Manager vulnerabilities

Sources

Also known as GHSA-h4c6-cm2m-h5f6.