CVE-2026-20223CWE-306

Cisco Secure Workload Unauthorized API Access Vulnerability

Critical · published May 20, 2026

CVSS v3.1
10.0
EPSS
1%
Percentile
57.3
In the wild
Unconfirmed
What it is

A vulnerability in the access validation of internal REST APIs of Cisco Secure Workload could allow an unauthenticated, remote attacker to access site resources with the privileges of the Site Admin role.

This vulnerability is due to insufficient validation and authentication when accessing REST API endpoints. An attacker could exploit this vulnerability if they are able to send a crafted API request to an affected endpoint. A successful exploit could allow the attacker to read sensitive information and make configuration changes across tenant boundaries with the privileges of the Site Admin user. 

The record
Technical detail
CVSS v3.1
10.0 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00835 · 57.3th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2026-05-20T16:06Z
EPSS history
Timeline
  • 20 MAY 16:06Z
    Cisco Secure Workload Unauthorized API Access Vulnerability
    cvelistv5