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CVE-2026-20306

9.1 CRITICAL

Published 2026-09-16 · Updated 2026-09-17

AI risk analysis

Summary
This vulnerability allows an attacker to perform command injection attacks and elevate privileges to root through the REST API of Cisco ISE and ISE-PIC, leading to potential system compromise and DoS conditions.
Exploitability
Exploitation requires valid administrative credentials and the ability to send crafted commands to the web-based management interface, making it moderately difficult.
Blast radius
If exploited, the attacker could execute arbitrary code and potentially cause the ISE node to become unavailable, impacting network access for unauthenticated endpoints.
Detection
No reliable host or network indicator is derivable from the published description.
Prioritized remediation
Upgrade to the latest version of Cisco ISE and ISE-PIC as soon as possible.
rcepriv-elevapiweb

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD description

A vulnerability in the REST API of Cisco ISE and ISE-PIC could allow an authenticated, remote attacker to perform command injection attacks on the underlying operating system and elevate privileges to root. To exploit this vulnerability, the attacker must have valid administrative credentials. This vulnerability is due to improper validation of user-supplied input. An attacker could exploit this vulnerability by sending crafted commands to the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary code on the device and elevate privileges to root. In single-node deployments, successful exploitation of this vulnerability could cause the affected ISE node to become unavailable, resulting in a DoS condition. In that condition, endpoints that have not already authenticated would be unable to access the network until the node is restored.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Weaknesses

CWE-78

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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