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CVE-2026-20126

HIGH CVSS 3.1: 8.8 EPSS 0.01%
Updated Feb 25, 2026
Cisco
Parameter Value
CVSS 8.8 (HIGH)
Type CWE-648
Vendor Cisco
Public PoC No

A vulnerability in Cisco Catalyst SD-WAN Manager could allow an authenticated, local attacker with low privileges to gain root privileges on the underlying operating system. This vulnerability is due to an insufficient user authentication mechanism in the REST API. An attacker could exploit this vulnerability by sending a request to the REST API of the affected system.

A successful exploit could allow the attacker to gain root privileges on the underlying operating system.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Weakness Type (CWE)