Check Point Advisories

Cisco Catalyst SD-WAN Manager Privilege Escalation (CVE-2026-20128)

Vulnerability
Protection

Check Point Reference:	CPAI-2026-1829
Date Published:	18 Mar 2026
Severity:	High
Last Updated:	Wednesday 18 March, 2026
Source:
Industry Reference:	CVE-2026-20128
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Cisco Catalyst SD-WAN Manager prior to 20.9 Cisco Catalyst SD-WAN Manager 20.9 and later, prior to 20.9.8.2 Cisco Catalyst SD-WAN Manager 20.11 and later, prior to 20.12.6.1 Cisco Catalyst SD-WAN Manager 20.12 and later, prior to 20.12.5.3 Cisco Catalyst SD-WAN Manager 20.12 and later, prior to 20.12.6.1 Cisco Catalyst SD-WAN Manager 20.13 and later, prior to 20.15.4.2 Cisco Catalyst SD-WAN Manager 20.14 and later, prior to 20.15.4.2 Cisco Catalyst SD-WAN Manager 20.15 and later, prior to 20.15.4.2 Cisco Catalyst SD-WAN Manager 20.16 and later, prior to 20.18.2.1 Cisco Catalyst SD-WAN Manager 20.18 and later, prior to 20.18.2.1
Vulnerability Description	A privilege escalation vulnerability exists in Cisco Catalyst SD-WAN Manager. Successful exploitation of this vulnerability would allow a remote attacker to gain unauthorized access to the affected system.

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the Cisco Catalyst SD-WAN Manager Privilege Escalation (CVE-2026-20128) protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Cisco Protection Violation.
Attack Information: Cisco Catalyst SD-WAN Manager Privilege Escalation (CVE-2026-20128)