{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-20147", "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "state": "PUBLISHED", "assignerShortName": "cisco", "dateReserved": "2025-10-08T11:59:15.385Z", "datePublished": "2026-04-15T16:03:25.648Z", "dateUpdated": "2026-04-15T17:06:37.746Z"}, "containers": {"cna": {"title": "Cisco Identity Services Engine 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 ISE and Cisco ISE-PIC 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 valid administrative 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 this vulnerability 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-traversal-8bYndVrZ", "name": "cisco-sa-ise-rce-traversal-8bYndVrZ"}], "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-traversal-8bYndVrZ", "discovery": "EXTERNAL", "defects": ["CSCws52738"]}, "problemTypes": [{"descriptions": [{"lang": "en", "description": "Improper Neutralization of Special Elements used in a Command ('Command Injection')", "type": "cwe", "cweId": "CWE-77"}]}], "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": "3.4 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 2", "status": "affected"}], "defaultStatus": "unknown"}, {"vendor": "Cisco", "product": "Cisco ISE Passive Identity Connector", "versions": [{"version": "3.2.0", "status": "affected"}, {"version": "3.1.0", "status": "affected"}, {"version": "3.3.0", "status": "affected"}, {"version": "3.4.0", "status": "affected"}], "defaultStatus": "unknown"}], "providerMetadata": {"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco", "dateUpdated": "2026-04-15T16:03:25.648Z"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-20147", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-04-15T16:50:25.946517Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-15T17:06:37.746Z"}}]}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability in Cisco ISE and Cisco ISE-PIC 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 valid administrative 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 this vulnerability 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."}], "id": "CVE-2026-20147", "lastModified": "2026-04-15T17:17:02.410", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.9, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 6.0, "source": "psirt@cisco.com", "type": "Primary"}]}, "published": "2026-04-15T17:17:02.410", "references": [{"source": "psirt@cisco.com", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-rce-traversal-8bYndVrZ"}], "sourceIdentifier": "psirt@cisco.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-77"}], "source": "psirt@cisco.com", "type": "Primary"}]}

{}

{"analysis": {"en": {"generated_at": "2026-04-15T19:20:48.280082+00:00", "value": {"mitigation_remediation": ["Update Cisco ISE and ISE\u2011PIC to the latest firmware or software release that contains the fix.", "Restrict administrative access to the ISE nodes to trusted internal networks and enforce strong authentication methods.", "Apply network segmentation and firewall rules to block unsolicited HTTP requests to the ISE management endpoints.", "Monitor system logs for unexpected privilege\u2011escalation and command\u2011execution activity and alert on anomalies."], "summary": {"action": "Apply Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "The vulnerability affects Cisco ISE Passive Identity Connector and Cisco Identity Services Engine Software. No specific version information is disclosed, implying that all current releases are potentially impacted until a patch is released by Cisco.", "description_and_impact": "A flaw in Cisco ISE and Cisco ISE\u2011PIC arises from insufficient validation of user input in a HTTP request, allowing a remote attacker with valid administrative credentials to run arbitrary commands on the host operating system. If the exploit succeeds, the attacker first gains user\u2011level access and can then elevate privileges to root. In addition, a single\u2011node ISE deployment can be brought down, causing a denial of service that isolates endpoints until the node is restored.", "risk_and_exploitability": "The CVSS score of 9.9 indicates a critical level of threat, but the EPSS score is not available, so the current exploitation probability remains uncertain. The vulnerability is not listed in the CISA KEV catalog. The attacker must be authenticated as an administrator on the device, obtained via legitimate credentials, then send a crafted HTTP request from a remote network. Successful exploitation would provide the attacker with full control over the underlying operating system, enabling data theft, persistence or the shutdown of the ISE node, which would disrupt network authentication for all un\u2011authenticated endpoints."}}}}, "created": "2026-04-15T19:30:12.382189+00:00", "updated": "2026-04-15T19:30:12.382199+00:00", "vendors": []}