CVE-2026-20223
CriticalCVSS 10.0Exploitation Probability (EPSS)
Elevated risk54th percentile - higher than 54% of all known CVEs
Summary
In Cisco Secure Workload, a vulnerability in the access validation of internal REST APIs could allow an unauthenticated, remote attacker to access site resources with Site Admin privileges. This is due to insufficient validation and authentication when accessing REST API endpoints. An attacker can send a crafted API request to a vulnerable endpoint to read sensitive information and make configuration changes across tenant boundaries.
Risk Assessment
An attacker can gain Site Admin privileges, read sensitive data, and modify configuration across tenants, leading to confidentiality and integrity breaches.
Recommendation
Apply security updates provided by Cisco for Cisco Secure Workload.
Other vulnerabilities in Cisco Secure Workload
See all- CVE-2026-20318Critical
Vulnerability in Cisco Secure Workload related to improper input validation (CWE-20). Discovered during internal security review, fixed in hardening release.
- CVE-2026-20317Critical
Vulnerability in Cisco Secure Workload related to improper authentication (CWE-287). Discovered during internal security review, fixed in hardening release.
- CVE-2026-20315Critical
Vulnerability in Cisco Secure Workload related to improper access control (CWE-284). Discovered during internal security review, fixed in hardening release.
- CVE-2026-20231Critical
Vulnerability in Cisco Secure Workload related to improper neutralization of special elements (CWE-74). Discovered during internal security review, fixed in hardening release.
- CVE-2026-20319High
Cisco Secure Workload contains multiple vulnerabilities related to buffer management issues, grouped under CWE-119. They were discovered during an internal security review and addressed in a software hardening release.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS