CVE-2026-20286 (GCVE-0-2026-20286)
Vulnerability from cvelistv5 – Published: 2026-09-16 20:24 – Updated: 2026-09-17 14:03
VLAI
EPSS
VEX
Title
Cisco Identity Services Engine Authorization Bypass Vulnerability
Summary
A vulnerability in the web-based management interface of Cisco Identify Services Engine (ISE) could allow an authenticated, remote attacker to modify parts of the configuration on an affected device.
This vulnerability is due to the lack of server-side validation of Administrator permissions. An attacker could exploit this vulnerability by submitting a crafted HTTP request to an affected system. A successful exploit could allow the attacker to modify descriptions of files on a specific page. To exploit this vulnerability, an attacker would need valid Administrator credentials.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 14:03 UTC
CWE
- CWE-285 - Improper Authorization
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Cisco | Cisco Identity Services Engine Software |
Affected:
3.1.0
Affected: 3.1.0 p1 Affected: 3.1.0 p3 Affected: 3.1.0 p2 Affected: 3.2.0 Affected: 3.1.0 p4 Affected: 3.1.0 p5 Affected: 3.2.0 p1 Affected: 3.1.0 p6 Affected: 3.2.0 p2 Affected: 3.1.0 p7 Affected: 3.3.0 Affected: 3.2.0 p3 Affected: 3.2.0 p4 Affected: 3.1.0 p8 Affected: 3.2.0 p5 Affected: 3.2.0 p6 Affected: 3.1.0 p9 Affected: 3.3 Patch 2 Affected: 3.3 Patch 1 Affected: 3.3 Patch 3 Affected: 3.4.0 Affected: 3.2.0 p7 Affected: 3.3 Patch 4 Affected: 3.4 Patch 1 Affected: 3.1.0 p10 Affected: 3.3 Patch 5 Affected: 3.3 Patch 6 Affected: 3.4 Patch 2 Affected: 3.3 Patch 7 Affected: 3.4 Patch 3 Affected: 3.5.0 Affected: 3.4 Patch 4 Affected: 3.3 Patch 8 Affected: 3.2 Patch 8 Affected: 3.5 Patch 1 Affected: 3.3 Patch 9 Affected: 3.2 Patch 9 Affected: 3.4 Patch 5 Affected: 3.5 Patch 3 Affected: 3.5 Patch 2 Affected: 3.3 Patch 10 Affected: 3.3 Patch 11 Affected: 3.4 Patch 6 Affected: 3.2 Patch 10 Affected: 3.1.0 p72 Affected: 3.1.0 p11 Affected: 3.1.0 p12 Affected: 3.2 Patch 11 |
guessed |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-20286",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-17T14:03:14.178518Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-17T14:03:25.301Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Identity Services Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.1.0"
},
{
"status": "affected",
"version": "3.1.0 p1"
},
{
"status": "affected",
"version": "3.1.0 p3"
},
{
"status": "affected",
"version": "3.1.0 p2"
},
{
"status": "affected",
"version": "3.2.0"
},
{
"status": "affected",
"version": "3.1.0 p4"
},
{
"status": "affected",
"version": "3.1.0 p5"
},
{
"status": "affected",
"version": "3.2.0 p1"
},
{
"status": "affected",
"version": "3.1.0 p6"
},
{
"status": "affected",
"version": "3.2.0 p2"
},
{
"status": "affected",
"version": "3.1.0 p7"
},
{
"status": "affected",
"version": "3.3.0"
},
{
"status": "affected",
"version": "3.2.0 p3"
},
{
"status": "affected",
"version": "3.2.0 p4"
},
{
"status": "affected",
"version": "3.1.0 p8"
},
{
"status": "affected",
"version": "3.2.0 p5"
},
{
"status": "affected",
"version": "3.2.0 p6"
},
{
"status": "affected",
"version": "3.1.0 p9"
},
{
"status": "affected",
"version": "3.3 Patch 2"
},
{
"status": "affected",
"version": "3.3 Patch 1"
},
{
"status": "affected",
"version": "3.3 Patch 3"
},
{
"status": "affected",
"version": "3.4.0"
},
{
"status": "affected",
"version": "3.2.0 p7"
},
{
"status": "affected",
"version": "3.3 Patch 4"
},
{
"status": "affected",
"version": "3.4 Patch 1"
},
{
"status": "affected",
"version": "3.1.0 p10"
},
{
"status": "affected",
"version": "3.3 Patch 5"
},
{
"status": "affected",
"version": "3.3 Patch 6"
},
{
"status": "affected",
"version": "3.4 Patch 2"
},
{
"status": "affected",
"version": "3.3 Patch 7"
},
{
"status": "affected",
"version": "3.4 Patch 3"
},
{
"status": "affected",
"version": "3.5.0"
},
{
"status": "affected",
"version": "3.4 Patch 4"
},
{
"status": "affected",
"version": "3.3 Patch 8"
},
{
"status": "affected",
"version": "3.2 Patch 8"
},
{
"status": "affected",
"version": "3.5 Patch 1"
},
{
"status": "affected",
"version": "3.3 Patch 9"
},
{
"status": "affected",
"version": "3.2 Patch 9"
},
{
"status": "affected",
"version": "3.4 Patch 5"
},
{
"status": "affected",
"version": "3.5 Patch 3"
},
{
"status": "affected",
"version": "3.5 Patch 2"
},
{
"status": "affected",
"version": "3.3 Patch 10"
},
{
"status": "affected",
"version": "3.3 Patch 11"
},
{
"status": "affected",
"version": "3.4 Patch 6"
},
{
"status": "affected",
"version": "3.2 Patch 10"
},
{
"status": "affected",
"version": "3.1.0 p72"
},
{
"status": "affected",
"version": "3.1.0 p11"
},
{
"status": "affected",
"version": "3.1.0 p12"
},
{
"status": "affected",
"version": "3.2 Patch 11"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the web-based management interface of Cisco Identify Services Engine (ISE) could allow an authenticated, remote attacker to modify parts of the configuration on an affected device.\r\n\r\nThis vulnerability is due to the lack of server-side validation of\u0026nbsp;Administrator\u0026nbsp;permissions. An attacker could exploit this vulnerability by submitting a crafted HTTP request to an affected system. A successful exploit could allow the attacker to modify descriptions of files on a specific page. To exploit this vulnerability, an attacker would need valid\u0026nbsp;Administrator credentials."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-285",
"description": "Improper Authorization",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-16T20:24:33.238Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-ise-auth-bypass-1-MxcTNgwx",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-auth-bypass-1-MxcTNgwx"
}
],
"source": {
"advisory": "cisco-sa-ise-auth-bypass-1-MxcTNgwx",
"defects": [
"CSCwt62644"
],
"discovery": "EXTERNAL"
},
"title": "Cisco Identity Services Engine Authorization Bypass Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20286",
"datePublished": "2026-09-16T20:24:33.238Z",
"dateReserved": "2025-10-08T11:59:15.404Z",
"dateUpdated": "2026-09-17T14:03:25.301Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-20286",
"date": "2026-09-18",
"epss": "0.00357",
"percentile": "0.29499"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unknown",
"product": "Cisco Identity Services Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.1.0"
},
{
"status": "affected",
"version": "3.1.0 p1"
},
{
"status": "affected",
"version": "3.1.0 p3"
},
{
"status": "affected",
"version": "3.1.0 p2"
},
{
"status": "affected",
"version": "3.2.0"
},
{
"status": "affected",
"version": "3.1.0 p4"
},
{
"status": "affected",
"version": "3.1.0 p5"
},
{
"status": "affected",
"version": "3.2.0 p1"
},
{
"status": "affected",
"version": "3.1.0 p6"
},
{
"status": "affected",
"version": "3.2.0 p2"
},
{
"status": "affected",
"version": "3.1.0 p7"
},
{
"status": "affected",
"version": "3.3.0"
},
{
"status": "affected",
"version": "3.2.0 p3"
},
{
"status": "affected",
"version": "3.2.0 p4"
},
{
"status": "affected",
"version": "3.1.0 p8"
},
{
"status": "affected",
"version": "3.2.0 p5"
},
{
"status": "affected",
"version": "3.2.0 p6"
},
{
"status": "affected",
"version": "3.1.0 p9"
},
{
"status": "affected",
"version": "3.3 Patch 2"
},
{
"status": "affected",
"version": "3.3 Patch 1"
},
{
"status": "affected",
"version": "3.3 Patch 3"
},
{
"status": "affected",
"version": "3.4.0"
},
{
"status": "affected",
"version": "3.2.0 p7"
},
{
"status": "affected",
"version": "3.3 Patch 4"
},
{
"status": "affected",
"version": "3.4 Patch 1"
},
{
"status": "affected",
"version": "3.1.0 p10"
},
{
"status": "affected",
"version": "3.3 Patch 5"
},
{
"status": "affected",
"version": "3.3 Patch 6"
},
{
"status": "affected",
"version": "3.4 Patch 2"
},
{
"status": "affected",
"version": "3.3 Patch 7"
},
{
"status": "affected",
"version": "3.4 Patch 3"
},
{
"status": "affected",
"version": "3.5.0"
},
{
"status": "affected",
"version": "3.4 Patch 4"
},
{
"status": "affected",
"version": "3.3 Patch 8"
},
{
"status": "affected",
"version": "3.2 Patch 8"
},
{
"status": "affected",
"version": "3.5 Patch 1"
},
{
"status": "affected",
"version": "3.3 Patch 9"
},
{
"status": "affected",
"version": "3.2 Patch 9"
},
{
"status": "affected",
"version": "3.4 Patch 5"
},
{
"status": "affected",
"version": "3.5 Patch 3"
},
{
"status": "affected",
"version": "3.5 Patch 2"
},
{
"status": "affected",
"version": "3.3 Patch 10"
},
{
"status": "affected",
"version": "3.3 Patch 11"
},
{
"status": "affected",
"version": "3.4 Patch 6"
},
{
"status": "affected",
"version": "3.2 Patch 10"
},
{
"status": "affected",
"version": "3.1.0 p72"
},
{
"status": "affected",
"version": "3.1.0 p11"
},
{
"status": "affected",
"version": "3.1.0 p12"
},
{
"status": "affected",
"version": "3.2 Patch 11"
}
]
}
],
"source": "psirt@cisco.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the web-based management interface of Cisco Identify Services Engine (ISE) could allow an authenticated, remote attacker to modify parts of the configuration on an affected device.\r\n\r\nThis vulnerability is due to the lack of server-side validation of\u0026nbsp;Administrator\u0026nbsp;permissions. An attacker could exploit this vulnerability by submitting a crafted HTTP request to an affected system. A successful exploit could allow the attacker to modify descriptions of files on a specific page. To exploit this vulnerability, an attacker would need valid\u0026nbsp;Administrator credentials."
}
],
"id": "CVE-2026-20286",
"lastModified": "2026-09-18T13:28:28.567",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 1.4,
"source": "psirt@cisco.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-20286",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-17T14:03:14.178518Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-09-16T21:17:09.353",
"references": [
{
"source": "psirt@cisco.com",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-auth-bypass-1-MxcTNgwx"
}
],
"sourceIdentifier": "psirt@cisco.com",
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-285"
}
],
"source": "psirt@cisco.com",
"type": "Secondary"
}
]
}
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-20286",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-17T14:03:14.178518Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-09-17T14:03:20.219Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Cisco Identity Services Engine Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "3.1.0"
},
{
"status": "affected",
"version": "3.1.0 p1"
},
{
"status": "affected",
"version": "3.1.0 p3"
},
{
"status": "affected",
"version": "3.1.0 p2"
},
{
"status": "affected",
"version": "3.2.0"
},
{
"status": "affected",
"version": "3.1.0 p4"
},
{
"status": "affected",
"version": "3.1.0 p5"
},
{
"status": "affected",
"version": "3.2.0 p1"
},
{
"status": "affected",
"version": "3.1.0 p6"
},
{
"status": "affected",
"version": "3.2.0 p2"
},
{
"status": "affected",
"version": "3.1.0 p7"
},
{
"status": "affected",
"version": "3.3.0"
},
{
"status": "affected",
"version": "3.2.0 p3"
},
{
"status": "affected",
"version": "3.2.0 p4"
},
{
"status": "affected",
"version": "3.1.0 p8"
},
{
"status": "affected",
"version": "3.2.0 p5"
},
{
"status": "affected",
"version": "3.2.0 p6"
},
{
"status": "affected",
"version": "3.1.0 p9"
},
{
"status": "affected",
"version": "3.3 Patch 2"
},
{
"status": "affected",
"version": "3.3 Patch 1"
},
{
"status": "affected",
"version": "3.3 Patch 3"
},
{
"status": "affected",
"version": "3.4.0"
},
{
"status": "affected",
"version": "3.2.0 p7"
},
{
"status": "affected",
"version": "3.3 Patch 4"
},
{
"status": "affected",
"version": "3.4 Patch 1"
},
{
"status": "affected",
"version": "3.1.0 p10"
},
{
"status": "affected",
"version": "3.3 Patch 5"
},
{
"status": "affected",
"version": "3.3 Patch 6"
},
{
"status": "affected",
"version": "3.4 Patch 2"
},
{
"status": "affected",
"version": "3.3 Patch 7"
},
{
"status": "affected",
"version": "3.4 Patch 3"
},
{
"status": "affected",
"version": "3.5.0"
},
{
"status": "affected",
"version": "3.4 Patch 4"
},
{
"status": "affected",
"version": "3.3 Patch 8"
},
{
"status": "affected",
"version": "3.2 Patch 8"
},
{
"status": "affected",
"version": "3.5 Patch 1"
},
{
"status": "affected",
"version": "3.3 Patch 9"
},
{
"status": "affected",
"version": "3.2 Patch 9"
},
{
"status": "affected",
"version": "3.4 Patch 5"
},
{
"status": "affected",
"version": "3.5 Patch 3"
},
{
"status": "affected",
"version": "3.5 Patch 2"
},
{
"status": "affected",
"version": "3.3 Patch 10"
},
{
"status": "affected",
"version": "3.3 Patch 11"
},
{
"status": "affected",
"version": "3.4 Patch 6"
},
{
"status": "affected",
"version": "3.2 Patch 10"
},
{
"status": "affected",
"version": "3.1.0 p72"
},
{
"status": "affected",
"version": "3.1.0 p11"
},
{
"status": "affected",
"version": "3.1.0 p12"
},
{
"status": "affected",
"version": "3.2 Patch 11"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the web-based management interface of Cisco Identify Services Engine (ISE) could allow an authenticated, remote attacker to modify parts of the configuration on an affected device.\r\n\r\nThis vulnerability is due to the lack of server-side validation of\u0026nbsp;Administrator\u0026nbsp;permissions. An attacker could exploit this vulnerability by submitting a crafted HTTP request to an affected system. A successful exploit could allow the attacker to modify descriptions of files on a specific page. To exploit this vulnerability, an attacker would need valid\u0026nbsp;Administrator credentials."
}
],
"exploits": [
{
"lang": "en",
"value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
"version": "3.1"
},
"format": "cvssV3_1"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-285",
"description": "Improper Authorization",
"lang": "en",
"type": "cwe"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-16T20:24:33.238Z",
"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"shortName": "cisco"
},
"references": [
{
"name": "cisco-sa-ise-auth-bypass-1-MxcTNgwx",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-auth-bypass-1-MxcTNgwx"
}
],
"source": {
"advisory": "cisco-sa-ise-auth-bypass-1-MxcTNgwx",
"defects": [
"CSCwt62644"
],
"discovery": "EXTERNAL"
},
"title": "Cisco Identity Services Engine Authorization Bypass Vulnerability"
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2026-20286",
"datePublished": "2026-09-16T20:24:33.238Z",
"dateReserved": "2025-10-08T11:59:15.404Z",
"dateUpdated": "2026-09-16T20:24:33.238Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
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.
Loading…
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.
Loading…
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.
Loading…