Access Control Vulnerabilities in Cisco Catalyst SD-WAN
CVE-2026-20304

9.9CRITICAL

Key Information:

Vendor

Cisco
Status
Cisco Catalyst Sd-wan Controller
Cisco Catalyst Sd-wan Manager
Vendor
CVE Published:
5 August 2026

Badges

👾 Exploit Exists

What is CVE-2026-20304?

Cisco Catalyst SD-WAN is affected by improper access control issues, which could potentially allow unauthorized access to system resources. The vulnerabilities have been identified as part of a proactive security review by Cisco, leading to a software hardening release aimed at mitigating these risks. Organizations utilizing the Cisco Catalyst SD-WAN should review their deployments and apply the necessary updates to enhance their security posture.

Affected Version(s)

Cisco Catalyst SD-WAN Controller 20.6.4

Cisco Catalyst SD-WAN Controller 20.9.2

Cisco Catalyst SD-WAN Controller 20.3.6

References

https://sec.cloudapps.cisco.com/security/center/content/C...

CVSS V3.1

Score:
9.9
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.