CVE-2026-20209

MEDIUM

Cisco Catalyst SD-WAN Manager Privilege Escalation Vulnerability

Title source: cna
STIX 2.1

Description

A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authenticated, remote attacker with read-only permissions to elevate their privileges from low to high and perform actions as a high-privileged user. This vulnerability exists because sensitive session information is recorded in audit logs. An attacker could exploit this vulnerability by elevating their read-only permissions in Cisco Catalyst SD-WAN Manager to those of a high-privileged user. A successful exploit could allow the attacker to perform actions as a high-privileged user.

References (2)

Core 2
Core References
Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability was disclosed in February 2026. This new advisory is for a new vulnerability in the control connection handshaking. The Indicators of Compromise
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-rpa-EHchtZk

Scores

CVSS v3 5.4
EPSS 0.0003
EPSS Percentile 9.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-779
Status published
Products (50)
Cisco/Cisco Catalyst SD-WAN Manager 17.2.10
Cisco/Cisco Catalyst SD-WAN Manager 17.2.4
Cisco/Cisco Catalyst SD-WAN Manager 17.2.5
Cisco/Cisco Catalyst SD-WAN Manager 17.2.6
Cisco/Cisco Catalyst SD-WAN Manager 17.2.7
Cisco/Cisco Catalyst SD-WAN Manager 17.2.8
Cisco/Cisco Catalyst SD-WAN Manager 17.2.9
Cisco/Cisco Catalyst SD-WAN Manager 18.2.0
Cisco/Cisco Catalyst SD-WAN Manager 18.3.0
Cisco/Cisco Catalyst SD-WAN Manager 18.3.1
... and 40 more
Published May 14, 2026
Tracked Since May 14, 2026