Cisco Secure Workload up to 4.0.3.13 REST API missing authentication

Summaryinfo

A vulnerability was found in Cisco Secure Workload. It has been rated as critical. Affected by this vulnerability is an unknown functionality of the component REST API. This manipulation causes missing authentication. This vulnerability appears as CVE-2026-20223. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Cisco Secure Workload. It has been declared as very critical. Affected by this vulnerability is an unknown function of the component REST API. The manipulation with an unknown input leads to a missing authentication vulnerability. The CWE definition for the vulnerability is CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE 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. 

It is possible to read the advisory at sec.cloudapps.cisco.com. This vulnerability is known as CVE-2026-20223 since 10/08/2025. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/23/2026).

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-1658). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• Cisco

Name

• Secure Workload

Version

• 1.102.21
• 1.103.1.12
• 2.0.1.34
• 2.0.2.20
• 2.1.1.29
• 2.1.1.31
• 2.1.1.33
• 2.2.1.34
• 2.2.1.35
• 2.2.1.39
• 2.2.1.41
• 2.3.1.41
• 2.3.1.45
• 2.3.1.49
• 2.3.1.50
• 2.3.1.51
• 2.3.1.52
• 2.3.1.53
• 3.1.1.53
• 3.1.1.54
• 3.1.1.55
• 3.1.1.59
• 3.1.1.61
• 3.1.1.65
• 3.1.1.67
• 3.1.1.70
• 3.2.1.18
• 3.2.1.19
• 3.2.1.20
• 3.2.1.28
• 3.2.1.31
• 3.2.1.32
• 3.2.1.33
• 3.3.2.2
• 3.3.2.5
• 3.3.2.12
• 3.3.2.16
• 3.3.2.23
• 3.3.2.28
• 3.3.2.33
• 3.3.2.35
• 3.3.2.42
• 3.3.2.50
• 3.3.2.53
• 3.4.1.1
• 3.4.1.6
• 3.4.1.14
• 3.4.1.19
• 3.4.1.20
• 3.4.1.28
• 3.4.1.34
• 3.4.1.35
• 3.4.1.40
• 3.5.1.1
• 3.5.1.2
• 3.5.1.17
• 3.5.1.20
• 3.5.1.23
• 3.5.1.30
• 3.5.1.31
• 3.5.1.37
• 3.6.1.5
• 3.6.1.17
• 3.6.1.21
• 3.6.1.35
• 3.6.1.36
• 3.6.1.47
• 3.6.1.52
• 3.7.1.5
• 3.7.1.22
• 3.7.1.39
• 3.7.1.51
• 3.7.1.59
• 3.8.1.1
• 3.8.1.19
• 3.8.1.36
• 3.8.1.39
• 3.8.1.53
• 3.9.1.1
• 3.9.1.10
• 3.9.1.24
• 3.9.1.25
• 3.9.1.28
• 3.9.1.38
• 3.9.1.52
• 3.9.1.64
• 3.9.1.66
• 3.9.1.69
• 3.10.1.1
• 3.10.2.11
• 3.10.3.19
• 3.10.4.8
• 3.10.5.6
• 3.10.6.3
• 3.10.7.4
• 4.0.1.1
• 4.0.2.4
• 4.0.2.5
• 4.0.3.13

License

• commercial

Website

• Vendor: https://www.cisco.com/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

Discussion