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Cisco Identity Services Engine Software CVE-2026-20180

| EUVDEUVD-2026-22970 CRITICAL
Path Traversal (CWE-22)
2026-04-15 cisco
9.9
CVSS 3.1 · Vendor: cisco
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Severity by source

Vendor (cisco) PRIMARY
9.9 CRITICAL
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Primary rating from Vendor (cisco) · only source for this CVE.

CVSS VectorVendor: cisco

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Analysis Generated
Jul 26, 2026 - 15:27 vuln.today
EUVD ID Assigned
Apr 15, 2026 - 16:30 euvd
EUVD-2026-22970
CVE Published
Apr 15, 2026 - 16:03 nvd
CRITICAL 9.9

DescriptionCVE.org

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.

This 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.

AnalysisAI

Remote code execution and privilege escalation in Cisco Identity Services Engine allows authenticated attackers with Read Only Admin privileges to execute arbitrary operating system commands via crafted HTTP requests, resulting in full root access. The vulnerability, rated 9.9 (Critical), impacts multiple ISE versions; in single-node deployments, the affected device may become unavailable, causing denial of service. No active exploitation (KEV) or public exploit code has been identified, and the EPSS score of 0.21% indicates low likelihood of widespread attacks.

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CVE-2026-20180 vulnerability details – vuln.today

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