CVE-2026-20223

critical · 10

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. 

CVSS

0.8%

EPSS (exploit prob.)

56th

EPSS percentile

2026-05-20

Published

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

Weaknesses

CWE-306

Affected products

Vendor	Product	Affected versions
cisco	secure_workload	< 3.10.8.3
cisco	secure_workload	>= 4.0, < 4.0.3.17

Check a specific version with /api/v1/cve/match.

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-csw-pnbsa-g8WEnuy

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-20223