CVE WatchOct 26, 2026

CVE-2026-20147

A vulnerability in Cisco ISE and Cisco ISE-PIC could allow an authenticated, remote attacker to execute arbitrary commands on the underlying

CVSS

9.9

Critical

EPSS

10.4%

p96

KEV

—

Exploit Today

0-100

Published: Apr 15, 2026 · Last modified: Oct 26, 2026 · CWE-77

EPSS · 30d

10.4%EPSS · 30 days10.4%

2026-10-072026-11-04

Technical description

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. 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 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.

Official references

sec.cloudapps.cisco.comhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-rce-traversal-8bYndVrZ

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CVECVSSEPSSKEVRExploitTitleMod.

CVE-2026-824138.8 HIG

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