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CVE-2026-20245

Severity
HIGH
CVSS
7.8
EPSS
0.25323
Risk score
65.06
CISA KEV
Yes
PoC
No
Published
2026-06-04
Modified
2026-07-21
First seen
2026-08-05
Aliases
EUVD-2026-34341, GHSA-H4C6-CM2M-H5F6
Products
Cisco:Catalyst SD-WAN Manager, Cisco:Cisco Catalyst SD-WAN Controller 17.2.5, Cisco:Cisco Catalyst SD-WAN Controller 18.3.7, Cisco:Cisco Catalyst SD-WAN Controller 18.4.1, Cisco:Cisco Catalyst SD-WAN Controller 19.2.31, Cisco:Cisco Catalyst SD-WAN Controller 19.2.32, Cisco:Cisco Catalyst SD-WAN Controller 20.12.5.3, Cisco:Cisco Catalyst SD-WAN Controller 20.3.3.2, Cisco:Cisco Catalyst SD-WAN Controller 20.3.6, Cisco:Cisco Catalyst SD-WAN Controller 20.4.2, Cisco:Cisco Catalyst SD-WAN Controller 20.6.5, Cisco:Cisco Catalyst SD-WAN Controller 20.9.9, Cisco:Cisco Catalyst SD-WAN Controller 26.1.1, Cisco:Cisco Catalyst SD-WAN Manager 17.2.10, Cisco:Cisco Catalyst SD-WAN Manager 18.3.0, Cisco:Cisco Catalyst SD-WAN Manager 18.3.4, Cisco:Cisco Catalyst SD-WAN Manager 18.3.8, Cisco:Cisco Catalyst SD-WAN Manager 18.4.0, Cisco:Cisco Catalyst SD-WAN Manager 19.2.099, Cisco:Cisco Catalyst SD-WAN Manager 19.2.4.0.8, Cisco:Cisco Catalyst SD-WAN Manager 20.1.1.1, Cisco:Cisco Catalyst SD-WAN Manager 20.11.1.1, Cisco:Cisco Catalyst SD-WAN Manager 20.11.1.2, Cisco:Cisco Catalyst SD-WAN Manager 20.12.501, Cisco:Cisco Catalyst SD-WAN Manager 20.13.1, Cisco:Cisco Catalyst SD-WAN Manager 20.14.1_LI_Images, Cisco:Cisco Catalyst SD-WAN Manager 20.18.2.1_LI_Images, Cisco:Cisco Catalyst SD-WAN Manager 20.18.3_LI_Images, Cisco:Cisco Catalyst SD-WAN Manager 20.3.1, Cisco:Cisco Catalyst SD-WAN Manager 20.3.2.0.5, Cisco:Cisco Catalyst SD-WAN Manager 20.3.2_929, Cisco:Cisco Catalyst SD-WAN Manager 20.3.3.0.4, Cisco:Cisco Catalyst SD-WAN Manager 20.3.4, Cisco:Cisco Catalyst SD-WAN Manager 20.3.4.0.26, Cisco:Cisco Catalyst SD-WAN Manager 20.3.4.1.2, Cisco:Cisco Catalyst SD-WAN Manager 20.3.4.2, Cisco:Cisco Catalyst SD-WAN Manager 20.3.4.2.1, Cisco:Cisco Catalyst SD-WAN Manager 20.3.4.2.2, Cisco:Cisco Catalyst SD-WAN Manager 20.3.813, Cisco:Cisco Catalyst SD-WAN Manager 20.4.1.1.5, Cisco:Cisco Catalyst SD-WAN Manager 20.4.2.1, Cisco:Cisco Catalyst SD-WAN Manager 20.4.2.3, Cisco:Cisco Catalyst SD-WAN Manager 20.6.3.0.51, Cisco:Cisco Catalyst SD-WAN Manager 20.6.5.1.11, Cisco:Cisco Catalyst SD-WAN Manager 20.6.5.1.2, Cisco:Cisco Catalyst SD-WAN Manager 20.6.7, Cisco:Cisco Catalyst SD-WAN Manager 20.6.8, Cisco:Cisco Catalyst SD-WAN Manager 20.7.1.0.2, Cisco:Cisco Catalyst SD-WAN Manager 20.9.4.0.4, Cisco:Cisco Catalyst SD-WAN Manager 20.9.5.2, Cisco:Cisco Catalyst SD-WAN Manager 20.9.5.2.14, cisco:catalyst_sd-wan_manager, cisco:sd-wan_vsmart_controller
Sources
nvd CVE-2026-20245
cisa.gov CVE-2026-20245
euvd EUVD-2026-34341

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.

References