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Cisco Catalyst SD-WAN Manager CVE-2026-20209

| EUVD-2026-30327 MEDIUM
Logging of Excessive Data (CWE-779)
2026-05-14 cisco GHSA-f8xf-95r6-r95h
5.4
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

2
Analysis Generated
May 14, 2026 - 17:32 vuln.today
CVE Published
May 14, 2026 - 16:08 nvd
MEDIUM 5.4

DescriptionNVD

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.

AnalysisAI

Privilege escalation in Cisco Catalyst SD-WAN Manager allows authenticated users with read-only permissions to elevate privileges to high-privileged user level through exposure of sensitive session information in audit logs. An attacker with initial read-only access can extract high-privilege session credentials from audit logs and impersonate an administrator, bypassing intended access controls. …

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CVE-2026-20209 vulnerability details – vuln.today

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