CVE-2026-20133: Cisco Catalyst SD-WAN Manager Exposure of Sensitive Information to an Unauthorized Actor Vulnerability

High severity, CVSS 7.5. Actively exploited: in CISA KEV since 2026-04-20. EPSS: 31.8% chance of exploitation in the next 30 days.

A vulnerability in Cisco Catalyst SD-WAN Software could allow an unauthenticated, remote attacker to view sensitive information on an affected system. This vulnerability is due to insufficient file system restrictions. An authenticated attacker with netadmin privileges could exploit this vulnerability by accessing the vshell of an affected system. A successful exploit could allow the attacker to read sensitive information on the underlying operating system.

Affected products

• Cisco Catalyst SD-WAN Manager: before 20.9.8.2 (fixed in 20.9.8.2); from 20.10, before 20.12.5.3 (fixed in 20.12.5.3); from 20.13, before 20.15.4.2 (fixed in 20.15.4.2); from 20.16, before 20.18.2.1 (fixed in 20.18.2.1); version 20.12.6 only

Published 2026-02-25. Last modified 2026-06-17.