Cisco SD-WAN Zero-Day CVE-2026-20245 Exploited
In June 2026, a high-severity zero-day vulnerability, CVE-2026-20245, was discovered in Cisco Catalyst SD-WAN Manager. This flaw allows authenticated attackers with netadmin privileges to execute arbitrary commands as root by uploading specially crafted files. Exploitation of this vulnerability has been observed in the wild, leading to unauthorized configuration changes on edge devices. Notably, attackers have been exploiting this vulnerability for months prior to its public disclosure, highlighting significant security gaps in the SD-WAN infrastructure. The exploitation of CVE-2026-20245 underscores a concerning trend of increasing attacks targeting SD-WAN solutions. Organizations relying on Cisco's SD-WAN products must prioritize immediate mitigation strategies, as the absence of a patch leaves systems vulnerable to potential breaches and operational disruptions.
Kill Chain