CVE-2020-3388: Cisco SD-WAN vManage Software Command Injection Vulnerability

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-07-16 · updated 2026-06-17
Weakness: CWE-287

Description

A vulnerability in the CLI of Cisco SD-WAN vManage Software could allow an authenticated, local attacker to inject arbitrary commands that are executed with root privileges. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by authenticating to the device and submitting crafted input to the CLI. The attacker must be authenticated to access the CLI. A successful exploit could allow the attacker to execute commands with root privileges.

Affected products

Cisco SD-WAN vManage: through 18.3.0; from 18.4.0 before 19.2.2; from 19.3.0 before 20.1.1 — fixed in 19.2.2, 20.1.1

How to fix

Upgrade to a fixed version: Cisco SD-WAN vManage 19.2.2, 20.1.1. Check the vendor advisory for mitigations.

References

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