Home/CVE/A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authenticated, r
CVE

CVE-2026-20209

A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authenticated, r

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.

MEDIUM · CVSS 5.4 EPSS 0.00033
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0

Weakness Classification

Scoring & Timeline

5.4
MEDIUM · CVSS v3.1 · psirt@cisco.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD14 May 2026 · 05:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.

Vendor Advisories

2
cisco-csafcisco-sa-sdwan-mltvnps2-JxpWm7R
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References & Sources

2
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