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Cisco SD-WAN Zero-Day CVE-2026-20127 Exploited Since 2023 for Admin Access

Written By Wednesday, 25 February 2026 Add Comment



2026-02-26T06:13:00Z

A newly disclosed maximum-severity security flaw in Cisco Catalyst SD-WAN Controller (formerly vSmart) and Catalyst SD-WAN Manager (formerly vManage) has come under active exploitation in the wild as part of malicious activity that dates back to 2023. The vulnerability, tracked as CVE-2026-20127 (CVSS score: 10.0), allows an unauthenticated remote attacker to bypass authentication and obtain

from The Hacker News https://ift.tt/DhrbSQk

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