Information disclosure in Cisco Catalyst Sd-Wan Manager

CVE-2026-20133

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.

Vulnerability class: Information Disclosure

EPSS: 0.314 (98.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: .

Required action: Please adhere to CISA’s guidelines to assess exposure and mitigate risks associated with Cisco SD-WAN devices as outlines in CISA’s Emergency Directive 26-03 (URL listed below in Notes) and CISA’s “Hunt & Hardening Guidance for Cisco SD-WAN Devices (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.

References

Frequently asked questions

What is CVE-2026-20133?
CVE-2026-20133 is a medium-severity vulnerability in Cisco Catalyst Sd-Wan Manager, classified under Information Disclosure. CVSS score: 6.5/10. Published 2026-02-25.
How severe is CVE-2026-20133?
Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2026-20133 known to be exploited?
Yes. CVE-2026-20133 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-04-20), indicating it is being actively exploited.