attackers are turning Cisco SD-WAN Manager into root access — CVE-2026-20262, patch now

A file-upload flaw in Cisco Catalyst SD-WAN Manager lets an authenticated attacker overwrite files and escalate to root. It's being exploited across… Aliteq Priya Nair · Software & Systems Editor

CVE-2026-20262 — file create/overwrite flaw in Cisco Catalyst SD-WAN Manager, escalating to root.

What you need to know

Actively exploited across on-prem, cloud, and government deployments.

What you need to know

Requires authentication, but the payoff is total control of the network controller.

What you need to know

Why it matters: the SD-WAN manager is the control plane for your network fabric — root there is catastrophic.

What you need to know

Action: apply Cisco's fixed release now; audit for unexpected files and admin activity.

What you need to know

Management interfaces for network infrastructure — SD-WAN controllers, firewalls, load balancers — should never be internet-reachable. The recurring theme in 2026's exploited-in-the-wild list, from…

Network gear belongs behind the fence

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