CVE-2026-20245: Cisco Catalyst SD-WAN Manager

What is CVE-2026-20245?

A vulnerability in the CLI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, 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.

CVSS7.8 NVD 3.1

SeverityHIGH

Exploitation In the wild In CISA KEV

EPSS<1% · P24

Triage statusActive Exploit

ActionPatch immediately

CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWECWE-116

NVD published2026-06-04

NVD last modified2026-06-05

CISA Known Exploited Vulnerability

Cisco Catalyst SD-WAN Manager Improper Encoding or Escaping of Output Vulnerability

Added to KEV2026-06-09

Federal patch deadline2026-06-23

Known ransomware useUnknown

Affected product

Cisco Catalyst SD-WAN Manager

Remediation Steps

Verify your Cisco SD-WAN Manager deployment type (On-Premises, Cloud-Pro, Cloud, or FedRAMP)
Contact Cisco support for patch availability and timeline for your deployment variant
Implement network segmentation to restrict access to SD-WAN Manager administrative interfaces
Monitor Cisco security advisories for patch release and apply as soon as available
Restrict administrative access to trusted networks only pending patch deployment

References

Coverage on defend.network

Vulnerability Priority Report – Week 2 of June 2026 (June 8 – 14)

🤖 This CVE page is generated by defend.network from NVD, CISA KEV, EPSS, and our verified daily briefings. Severity and exploitation data come from official sources; always verify remediation steps against the official vendor advisory before acting in production.