CVE-2026-20223: Cisco Secure Workload · Missing Authentication
Affects Cisco Secure WorkloadSource CVE Database V5
Not known to be exploited · CVSS 10.0 Critical.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.8% chance of exploitation in 30 days – higher than 57% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 20 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
Public exploit code: GitHub proofs of concept
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| CiscoCisco Secure Workload | Affected
| Fixed in– |
AI-suggested
Until a fix is available, restrict access to Cisco Secure Workload management interfaces and internal APIs to trusted networks and authenticated users only. Monitor for unusual API activity and consider implementing network-level controls to limit exposure.
Description
CVE-2026-20223 is a critical vulnerability in Cisco Secure Workload affecting multiple versions. It involves missing authentication on internal REST API endpoints, allowing unauthenticated remote attackers to access site resources with Site Admin privileges. Exploitation could lead to unauthorized reading of sensitive information and configuration changes across tenant boundaries. The vulnerability is due to insufficient validation and authentication of API requests. There is no confirmed patch or official remediation guidance available at this time. The vulnerability has a CVSS score of 10.0, indicating critical severity. No known exploits in the wild have been reported so far.