Priv Escalation in Cisco SD-WAN Manager via Aud Log Leakage
CVE-2026-20209 Published on May 14, 2026

Cisco Catalyst SD-WAN Manager Privilege Escalation Vulnerability
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.

NVD

Vulnerability Analysis

CVE-2026-20209 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and no impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
LOW
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
LOW
Integrity Impact:
LOW
Availability Impact:
NONE

Weakness Type

Logging of Excessive Data

The software logs too much information, making log files hard to process and possibly hindering recovery efforts or forensic analysis after an attack. While logging is a good practice in general, and very high levels of logging are appropriate for debugging stages of development, too much logging in a production environment might hinder a system administrator's ability to detect anomalous conditions. This can provide cover for an attacker while attempting to penetrate a system, clutter the audit trail for forensic analysis, or make it more difficult to debug problems in a production environment.


Products Associated with CVE-2026-20209

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Cisco Catalyst Sd Wan Manager
 

Affected Versions

Cisco Catalyst SD-WAN Manager: