Urgent: Cisco SD-WAN Manager Vulnerabilities Under Active Exploitation
In March 2026, Cisco disclosed active exploitation of two vulnerabilities in its Catalyst SD-WAN Manager: CVE-2026-20122 and CVE-2026-20128. CVE-2026-20122 is a high-severity arbitrary file overwrite vulnerability that allows authenticated remote attackers with read-only API access to overwrite files on the local file system, potentially escalating privileges. CVE-2026-20128 is a medium-severity information disclosure flaw enabling authenticated local attackers with valid vManage credentials to access sensitive information, facilitating lateral movement within networks. These vulnerabilities affect all configurations of the Catalyst SD-WAN Manager software. ([cisco.com](https://www.cisco.com/c/en/us/support/docs/csa/cisco-sa-sdwan-authbp-qwCX8D4v.html?utm_source=openai)) The active exploitation of these vulnerabilities underscores the persistent targeting of network infrastructure by sophisticated threat actors. Organizations utilizing Cisco's SD-WAN solutions must prioritize immediate remediation to mitigate potential breaches and maintain network integrity. ([thehackernews.com](https://thehackernews.com/2026/03/cisco-confirms-active-exploitation-of.html?utm_source=openai))
Kill Chain