CVE-2020-3372: Cisco SD-WAN Firmware

Medium severity, CVSS 6.5. EPSS: 0.9% chance of exploitation in the next 30 days.

A vulnerability in the web-based management interface of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to consume excessive system memory and cause a denial of service (DoS) condition on an affected system. The vulnerability is due to inefficient memory management. An attacker could exploit this vulnerability by sending a large number of crafted HTTP requests to the affected web-based management interface. A successful exploit could allow the attacker to exhaust system memory, which could cause the system to stop processing new connections and could result in a DoS condition.

Affected products

• Cisco SD-WAN Firmware: before 19.2.3 (fixed in 19.2.3); from 20.1.0, before 20.1.12 (fixed in 20.1.12)

Published 2020-07-16. Last modified 2026-06-17.