CVE-2026-20133 Cisco Catalyst SD-WAN Manager Exposure of Sensitive Information to an Unauthorized Actor

Exploited in the wild Medium 6.5 Published 25 Feb 2026 Updated 22 Apr 2026

An authenticated attacker with netadmin privileges can access the vshell to read sensitive information from the underlying operating system.

Exploited in the wild: Since 20 Apr 2026
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-20133?

CVE-2026-20133 is a medium-severity vulnerability in Cisco Catalyst Sd-Wan Manager, published on 25 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability in Cisco Catalyst SD-WAN Software could allow an unauthenticated, remote attacker to view sensitive information on an affected system. This vulnerability is due to insufficient file system restrictions. An authenticated attacker with netadmin privileges could exploit this vulnerability by accessing the vshell of an affected system. A successful exploit could allow the attacker to read sensitive information on the underlying operating system.

Weakness: CWE-200

Which versions are affected by CVE-2026-20133?

It affects 1 product.

Products include Cisco Catalyst Sd-Wan Manager.

How do I fix CVE-2026-20133?

No fix has been published for CVE-2026-20133 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 23 Apr 2026.

Is CVE-2026-20133 being exploited?

Yes. Attackers have exploited CVE-2026-20133 in the wild since at least 20 Apr 2026.

All Cisco Catalyst Sd-Wan Manager vulnerabilities

Sources

Also known as GHSA-cf88-f64q-c626.