Insufficient Authentication in Cisco Catalyst SD-WAN Manager
CVE-2026-20126

8.8HIGH

Key Information:

Vendor

Cisco
Status
Cisco Catalyst Sd-wan Manager
Vendor
CVE Published:
25 February 2026

Badges

👾 Exploit Exists

What is CVE-2026-20126?

A vulnerability in the Cisco Catalyst SD-WAN Manager allows an authenticated, local attacker with low privileges to exploit the REST API. Due to an insufficient user authentication mechanism, attackers can send crafted requests to the API, leading to unauthorized root access on the underlying operating system. This poses a significant risk as it allows for deeper system compromise and potential escalations of privileges.

Affected Version(s)

Cisco Catalyst SD-WAN Manager 20.1.12

Cisco Catalyst SD-WAN Manager 19.2.1

Cisco Catalyst SD-WAN Manager 18.4.4

References

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

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.