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

Technical Severity

CVSS v3.1 Metrics

MEDIUM

6.5 / 10

Minimal Risk Critical

Vector Specification

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

Exploitation Likelihood

EPSS Prediction

1.97 %

Predictive Probability

Percentile Rank

83.6 th

Documented as more likely to be exploited than 83.6% of known CVEs.

Detection Date

Apr 20, 2026

Remediation Due

Apr 23, 2026

CISA Catalog Active

Threat Analysis

Cisco Catalyst SD-WAN Manager contains an exposure of sensitive information to an unauthorized actor vulnerability that could allow remote attackers to view sensitive information on affected systems.

Remediation Directive

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.

External Intelligence

CISA

CISA Advisory

https://www.cisa.gov/news-events/directives/ed-26-03-mitigate-vulnerabilities-cisco-sd-wan-systems

CISA

CISA Advisory

https://www.cisa.gov/news-events/directives/supplemental-direction-ed-26-03-hunt-and-hardening-guidance-cisco-sd-wan-systems

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-authbp-qwCX8D4v

NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2026-20133