CVE-2026-20209 Cisco Catalyst SD-WAN Manager Privilege Escalation Vulnerability

Medium 5.4 Published 14 May 2026 Updated 15 May 2026

An authenticated low-privilege attacker can escalate to high privileges by exploiting sensitive session data in audit logs within Cisco Catalyst SD-WAN Manager.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-20209?

CVE-2026-20209 is a medium-severity vulnerability in Cisco Catalyst Sd-Wan Manager, published on 14 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official 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.

Weakness: CWE-779

Which versions are affected by CVE-2026-20209?

It affects 1 product.

Products include Cisco Catalyst Sd-Wan Manager.

How do I fix CVE-2026-20209?

No fix has been published for CVE-2026-20209 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-20209 being exploited?

There is no known exploitation of CVE-2026-20209 in the wild and no public exploit code.

All Cisco Catalyst Sd-Wan Manager vulnerabilities

Sources

Also known as GHSA-f8xf-95r6-r95h.