CVE-2026-20223 (GCVE-0-2026-20223)
Vulnerability from cvelistv5 – Published: 2026-05-20 16:06 – Updated: 2026-05-21 03:55
VLAI
EPSS
VEX
Title
Cisco Secure Workload Unauthorized API Access Vulnerability
Summary
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.
Severity
10 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-20 00:00 UTC
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Secure Workload |
Affected:
2.2.1.41
Affected: 3.2.1.18 Affected: 3.3.2.50 Affected: 3.4.1.28 Affected: 3.4.1.34 Affected: 2.3.1.45 Affected: 2.3.1.41 Affected: 3.3.2.28 Affected: 3.1.1.59 Affected: 2.0.2.20 Affected: 2.1.1.33 Affected: 2.1.1.29 Affected: 3.2.1.28 Affected: 3.4.1.35 Affected: 3.1.1.65 Affected: 3.1.1.67 Affected: 2.0.1.34 Affected: 2.3.1.49 Affected: 2.2.1.39 Affected: 3.4.1.19 Affected: 3.3.2.23 Affected: 3.1.1.61 Affected: 3.1.1.54 Affected: 3.5.1.17 Affected: 3.3.2.33 Affected: 3.5.1.1 Affected: 2.3.1.53 Affected: 3.5.1.20 Affected: 3.5.1.30 Affected: 3.3.2.16 Affected: 3.1.1.55 Affected: 3.4.1.6 Affected: 2.3.1.50 Affected: 2.3.1.52 Affected: 3.2.1.19 Affected: 2.2.1.35 Affected: 3.1.1.53 Affected: 3.1.1.70 Affected: 3.2.1.20 Affected: 3.5.1.2 Affected: 1.103.1.12 Affected: 2.3.1.51 Affected: 3.3.2.42 Affected: 3.4.1.1 Affected: 3.3.2.12 Affected: 2.1.1.31 Affected: 3.5.1.23 Affected: 3.3.2.53 Affected: 3.4.1.14 Affected: 3.3.2.2 Affected: 3.4.1.20 Affected: 3.3.2.35 Affected: 2.2.1.34 Affected: 1.102.21 Affected: 3.3.2.5 Affected: 3.5.1.31 Affected: 3.6.1.5 Affected: 3.2.1.31 Affected: 3.5.1.37 Affected: 3.4.1.40 Affected: 3.6.1.17 Affected: 3.6.1.21 Affected: 3.2.1.32 Affected: 3.2.1.33 Affected: 3.6.1.35 Affected: 3.6.1.36 Affected: 3.7.1.5 Affected: 3.6.1.47 Affected: 3.7.1.22 Affected: 3.6.1.52 Affected: 3.7.1.39 Affected: 3.8.1.1 Affected: 3.7.1.51 Affected: 3.8.1.19 Affected: 3.8.1.36 Affected: 3.7.1.59 Affected: 3.8.1.39 Affected: 3.9.1.1 Affected: 3.9.1.10 Affected: 3.9.1.24 Affected: 3.9.1.25 Affected: 3.9.1.28 Affected: 3.9.1.38 Affected: 3.8.1.53 Affected: 3.9.1.52 Affected: 3.10.1.1 Affected: 3.9.1.64 Affected: 3.10.2.11 Affected: 3.9.1.66 Affected: 3.10.3.19 Affected: 3.9.1.69 Affected: 3.10.4.8 Affected: 3.10.5.6 Affected: 4.0.1.1 Affected: 4.0.2.4 Affected: 4.0.2.5 Affected: 3.10.6.3 Affected: 3.10.7.4 Affected: 4.0.3.13 |
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"status": "affected",
"version": "3.10.6.3"
},
{
"status": "affected",
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},
{
"status": "affected",
"version": "4.0.3.13"
}
]
}
],
"source": "psirt@cisco.com"
}
],
"configurations": [
{
"nodes": [
{
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},
{
"lang": "es",
"value": "Una vulnerabilidad en la validaci\u00f3n de acceso de las API REST internas de Cisco Secure Workload podr\u00eda permitir a un atacante remoto no autenticado acceder a los recursos del sitio con los privilegios del rol de Administrador del Sitio.\n\nEsta vulnerabilidad se debe a una validaci\u00f3n y autenticaci\u00f3n insuficientes al acceder a los puntos finales de la API REST. Un atacante podr\u00eda explotar esta vulnerabilidad si es capaz de enviar una solicitud de API manipulada a un punto final afectado. Un exploit exitoso podr\u00eda permitir al atacante leer informaci\u00f3n sensible y realizar cambios de configuraci\u00f3n a trav\u00e9s de los l\u00edmites de los inquilinos con los privilegios del usuario Administrador del Sitio."
}
],
"id": "CVE-2026-20223",
"lastModified": "2026-07-23T12:10:00.110",
"metrics": {
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{
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{
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"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N",
"version": "3.1"
},
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"impactScore": 5.8,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
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{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"options": [
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"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-20T00:00:00+00:00",
"version": "2.0.3"
}
}
]
},
"published": "2026-05-20T17:16:20.400",
"references": [
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"tags": [
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],
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}
],
"sourceIdentifier": "psirt@cisco.com",
"vulnStatus": "Analyzed",
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{
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"type": "Secondary"
}
]
}
},
"vulnrichment": {
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{
"metrics": [
{
"other": {
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"options": [
{
"Exploitation": "none"
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{
"Automatable": "yes"
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{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-20T18:32:17.462956Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-20T18:32:21.218Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Secure Workload",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
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{
"status": "affected",
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{
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{
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{
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{
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{
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{
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{
"status": "affected",
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{
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{
"status": "affected",
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{
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},
{
"status": "affected",
"version": "2.3.1.50"
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{
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},
{
"status": "affected",
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{
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
"version": "1.103.1.12"
},
{
"status": "affected",
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{
"status": "affected",
"version": "3.3.2.42"
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{
"status": "affected",
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{
"status": "affected",
"version": "3.3.2.12"
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{
"status": "affected",
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{
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{
"status": "affected",
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{
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},
{
"status": "affected",
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{
"status": "affected",
"version": "3.3.2.35"
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{
"status": "affected",
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},
{
"status": "affected",
"version": "1.102.21"
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{
"status": "affected",
"version": "3.3.2.5"
},
{
"status": "affected",
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{
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},
{
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{
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"status": "affected",
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{
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},
{
"status": "affected",
"version": "3.10.4.8"
},
{
"status": "affected",
"version": "3.10.5.6"
},
{
"status": "affected",
"version": "4.0.1.1"
},
{
"status": "affected",
"version": "4.0.2.4"
},
{
"status": "affected",
"version": "4.0.2.5"
},
{
"status": "affected",
"version": "3.10.6.3"
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{
"status": "affected",
"version": "3.10.7.4"
},
{
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"version": "4.0.3.13"
}
]
}
],
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{
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"value": "A vulnerability in the\u0026nbsp;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\u0026nbsp;Site Admin role.\r\n\r\nThis 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\u0026nbsp;Site Admin user.\u0026nbsp;"
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
}
],
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"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 10,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
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"description": "Missing Authentication for Critical Function",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-20T16:06:30.740Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-csw-pnbsa-g8WEnuy",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-csw-pnbsa-g8WEnuy"
}
],
"source": {
"advisory": "cisco-sa-csw-pnbsa-g8WEnuy",
"defects": [
"CSCwt99942"
],
"discovery": "INTERNAL"
},
"title": "Cisco Secure Workload Unauthorized API Access Vulnerability"
}
},
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"assignerShortName": "cisco",
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"datePublished": "2026-05-20T16:06:30.740Z",
"dateReserved": "2025-10-08T11:59:15.399Z",
"dateUpdated": "2026-05-21T03:55:37.210Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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