CVE-2018-15387: Cisco SD-WAN

Critical severity, CVSS 9.8. EPSS: 1.1% chance of exploitation in the next 30 days.

A vulnerability in the Cisco SD-WAN Solution could allow an unauthenticated, remote attacker to bypass certificate validation on an affected device. The vulnerability is due to improper certificate validation. An attacker could exploit this vulnerability by supplying a system image signed with a crafted certificate to an affected device, bypassing the certificate validation. An exploit could allow an attacker to deploy a crafted system image.

Affected products

• Cisco SD-WAN: from 17.2.0, before 17.2.8 (fixed in 17.2.8); version 18.3.0 only

Published 2018-10-05. Last modified 2026-06-17.