Cisco Releases Emergency Patch For Actively Exploited SD-WAN Zero-Day Allowing Root-Level System Compromise

Cisco Releases Emergency Patch For Actively Exploited SD-WAN Zero-Day Allowing Root-Level System Compromise

By LinkedInEditors
Publication Date: 2026-06-15 19:29:00

Cisco has released emergency security updates to address a critical vulnerability in its Catalyst SD-WAN Manager platform after confirming that the flaw was actively exploited in real-world attacks, marking yet another significant security incident affecting enterprise network infrastructure this year.

The vulnerability, tracked as CVE-2026-20262, affects Cisco Catalyst SD-WAN Manager—formerly known as SD-WAN vManage—a centralized network orchestration platform used by organizations worldwide to manage large-scale software-defined wide-area networks (SD-WAN). Security researchers and enterprise defenders are warning that the flaw could enable attackers with limited access to gain full control of affected systems by escalating privileges to the highest administrative level.

The disclosure adds to a growing list of…