MEDIUM CISA KEV

CVE-2026-20133

CVSS v3

6.5

MEDIUM

EPSS Score

1.3 %

exploit probability

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

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.

CISA Known Exploited Vulnerability

Date Added: 2026-04-20
Patch Due Date: 2026-04-23
Ransomware Use: Unknown

Technical details

CVSS v3 Vector: 3.1
Published: 2026-02-25
Last Modified: 2026-04-22

Frequently asked questions

What is CVE-2026-20133?

Is CVE-2026-20133 actively exploited?

Yes. CVE-2026-20133 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 4/23/2026.

What is the CVSS score for CVE-2026-20133?

CVE-2026-20133 has a CVSS v3 base score of 6.5 (MEDIUM severity), with vector string 3.1.

Is CVE-2026-20133 affecting your environment?

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