CVE-2026-20129
Critical · 9.8CVSS
9.8
EPSS
0.8%
Published
Feb 25, 2026
CISA due date
—
The record
A vulnerability in the API user authentication of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to gain access to an affected system as a user who has the netadmin role. The vulnerability is due to improper authentication for requests that are sent to the API. An attacker could exploit this vulnerability by sending a crafted request to the API of an affected system. A successful exploit could allow the attacker to execute commands with the privileges of the netadmin role. Note: Cisco Catalyst SD-WAN Manager releases 20.18 and later are not affected by this vulnerability.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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