Cisco discloses zero-day vulnerability in SD-WAN management software

Source:The Register

02 — Who / Subject

Cisco

03 — Where / Locus

Global

04 — When / Temporality

June 5, 2026

05 — Why / Core Summary

"Cisco has issued an advisory for a high-severity zero-day vulnerability (CVE-2026-20245) in its Catalyst SD-WAN Manager. The flaw allows authenticated local attackers to escalate privileges and execute commands with root access. Cisco is currently working on a patch and recommends customers monitor for unauthorized activity."

Conflict Analysis

The vulnerability is critical due to the potential for root-level access. It is part of a series of security issues affecting Cisco's SD-WAN products this year.

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Kevin Mitnick provides deep insights into how vulnerabilities are exploited and the mindset of attackers, which is essential for understanding the risks associated with zero-day vulnerabilities in enterprise network management software.

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COMPAMIR

Cisco discloses zero-day vulnerability in SD-WAN management software

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The Art of Invisibility: The World's Most Famous Hacker Teaches You How to Be Safe in the Age of Big Brother and Big Data