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Mandiant reveals how Cisco SD-WAN zero-day attacks gained root access

Mandiant details how attackers exploited CVE-2026-20245 in Cisco Catalyst SD-WAN to gain root and create rogue accounts — enterprises running affected appliances need immediate patching.

Summary written by editorial AI · Source link below

Filed by BleepingComputer1 min readCVE-2026-20245Read at source ↗
CVSS7.8highCVE-2026-20245

New details have been revealed on how hackers exploited a Cisco Catalyst SD-WAN vulnerability tracked as CVE-2026-20245 in zero-day attacks to create rogue root accounts on targeted devices. [...]

Editorial Analysis

Why it matters

SD-WAN appliances sit at the network edge of distributed enterprises; root-level compromise enables persistent access across branch offices and cloud on-ramps.

What to do

Patch CVE-2026-20245 immediately, audit SD-WAN appliances for rogue accounts, and review management-plane access controls.

Board brief

A zero-day in widely deployed Cisco SD-WAN gear gave attackers full root access — patching and forensic review are urgent.

Forward-looking interpretation drafted by editorial AI under human review — not a reproduction of the source. See methodology.

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Read the full report at BleepingComputer

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