CVE WatchJul 23, 2026

CVE-2026-20245

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

CVSS

7.8

High

EPSS

25.3%

p98

KEV

YES

Jun 9, 2026

Exploit Today

0-100

Published: Jun 4, 2026 · Last modified: Jul 23, 2026 · CWE-116

EPSS · 30d

25.3%EPSS · 30 days25.3%

2026-09-172026-10-15

KEV catalog record

Product

Cisco / Catalyst SD-WAN Manager

Vulnerability

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

Added to KEV

Jun 9, 2026

Remediate by

Jun 23, 2026

Known ransomware use

Summary description

Cisco Catalyst SD-WAN Manager formerly SD-WAN vManage contains an improper encoding or escaping of output vulnerability. This vulnerability could allow an authenticated, local attacker to execute arbitrary commands as root by supplying a crafted file to the affected system.

Required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Notes

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-privesc-4uxFrdzx ; https://nvd.nist.gov/vuln/detail/CVE-2026-20245

Technical 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.

Official references

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