{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-20180", "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "state": "PUBLISHED", "assignerShortName": "cisco", "dateReserved": "2025-10-08T11:59:15.393Z", "datePublished": "2026-04-15T16:03:51.335Z", "dateUpdated": "2026-04-15T16:56:34.849Z"}, "containers": {"cna": {"title": "Cisco Identity Services Engine Multiple Remote Code Execution Vulnerability", "metrics": [{"format": "cvssV3_1", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "baseScore": 9.9, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}}], "descriptions": [{"lang": "en", "value": "A vulnerability in Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device. To exploit this vulnerability, the attacker must have at least Read Only Admin credentials.\r\n\r\nThis vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to obtain user-level access to the underlying operating system and then elevate privileges to root. In single-node ISE deployments, successful exploitation of these vulnerabilities could cause the affected ISE node to become unavailable, resulting in a denial of service (DoS) condition. In that condition, endpoints that have not already authenticated would be unable to access the network until the node is restored."}], "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-rce-4fverepv", "name": "cisco-sa-ise-rce-4fverepv"}], "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."}], "source": {"advisory": "cisco-sa-ise-rce-4fverepv", "discovery": "INTERNAL", "defects": ["CSCwq22993"]}, "problemTypes": [{"descriptions": [{"lang": "en", "description": "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", "type": "cwe", "cweId": "CWE-22"}]}], "affected": [{"vendor": "Cisco", "product": "Cisco Identity Services Engine Software", "versions": [{"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": "3.2 Patch 8", "status": "affected"}], "defaultStatus": "unknown"}], "providerMetadata": {"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco", "dateUpdated": "2026-04-15T16:03:51.335Z"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-20180", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-04-15T16:47:12.240915Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-15T16:56:34.849Z"}}]}}

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{}

{"analysis": {"en": {"generated_at": "2026-04-15T19:19:22.099640+00:00", "value": {"mitigation_remediation": ["Apply any available Cisco ISE security patch or update that addresses the HTTP input validation flaw.", "Restrict access to the ISE management interface by limiting it to a trusted internal network segment and enforce strong network segmentation and firewall rules.", "Enforce the principle of least privilege \u2013 remove unnecessary Read\u2011Only Admin accounts and use role\u2011based access control to limit credentials that can be used to exploit the vulnerability."], "summary": {"action": "Patch ASAP", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "The vulnerability affects Cisco Identity Services Engine Software. No specific version numbers are disclosed in the advisory, so all deployments of ISE that have not applied a patch should be considered potentially vulnerable.", "description_and_impact": "A flaw in Cisco Identity Services Engine (ISE) that allows an authenticated, remote attacker to send a specially crafted HTTP request to the ISE web interface. The insufficient validation of user input means the attacker can inject operating\u2011system commands. Once an exploit succeeds, the attacker gains user\u2011level access to the underlying OS and can then elevate privileges to root, giving full control over the device. In single\u2011node deployments, the attack can also crash the ISE node, causing a denial of service that blocks new endpoint authentications until the node is recovered.", "risk_and_exploitability": "The vulnerability is rated CVSS 9.9, indicating a high severity level. The advisement does not list an EPSS score or a KEV designation. The attack requires remote access to the ISE management interface and the presence of a Read\u2011Only Admin credential, but it does not rely on other uncommon prerequisites. Because the vector is remote over HTTP, attackers with sufficient network access could launch the exploit without interacting with local users. The combined impact on confidentiality, integrity, and availability makes this an urgent risk that should be addressed promptly."}}}}, "created": "2026-04-15T19:30:12.381466+00:00", "updated": "2026-04-15T19:30:12.381482+00:00", "vendors": []}