CVE-2026-20133

Name: CVE-2026-20133
Creator: NVD / NIST
Published: 2026-02-25T17:25:30.983+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10Actively ExploitedEPSS 10.24%

Last modified Jun 17, 2026

CVE-2026-20133 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. CISA has confirmed active exploitation in the wild. EPSS estimates a 10.24% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

10.24%

95.1th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Apr 23, 2026.

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Cisco	Catalyst Sd-Wan Manager	< 20.9.8.2
Cisco	Catalyst Sd-Wan Manager	>= 20.10, < 20.12.5.3
Cisco	Catalyst Sd-Wan Manager	>= 20.13, < 20.15.4.2
Cisco	Catalyst Sd-Wan Manager	>= 20.16, < 20.18.2.1
Cisco	Catalyst Sd-Wan Manager	20.12.6

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-authbp-qwCX8D4vVendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20133US Government Resource

Timeline

Published: Feb 25, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-20133?

How severe is CVE-2026-20133?

CVE-2026-20133 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 10.24% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2026-20133?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-20133?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST