CVE-2026-20305

published 2026-09-16

CVE-2026-20305: A vulnerability in the diagnostic tools of Cisco ISE and ISE-PIC could allow an authenticated, remote attacker to perform command injection attacks on the…

Priority P2 64 critical 9.1 CVSS 3.1

AV N AC L PR H UI N S C C H I H A H

A vulnerability in the diagnostic tools 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 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.

Affected

51 ranges · showing 25

Vendor	Product	Version range	Fixed in
cisco	cisco_identity_services_engine_software	—	—
cisco	cisco_identity_services_engine_software	—	—
cisco	cisco_identity_services_engine_software	—	—
cisco	cisco_identity_services_engine_software	—	—
cisco	cisco_identity_services_engine_software	—	—
cisco	cisco_identity_services_engine_software	—	—
cisco	cisco_identity_services_engine_software	—	—
cisco	cisco_identity_services_engine_software	—	—
cisco	cisco_identity_services_engine_software	—	—
cisco	cisco_identity_services_engine_software	—	—
cisco	cisco_identity_services_engine_software	—	—
cisco	cisco_identity_services_engine_software	—	—
cisco	cisco_identity_services_engine_software	—	—
cisco	cisco_identity_services_engine_software	—	—
cisco	cisco_identity_services_engine_software	—	—
cisco	cisco_identity_services_engine_software	—	—
cisco	cisco_identity_services_engine_software	—	—
cisco	cisco_identity_services_engine_software	—	—
cisco	cisco_identity_services_engine_software	—	—
cisco	cisco_identity_services_engine_software	—	—
cisco	cisco_identity_services_engine_software	—	—
cisco	cisco_identity_services_engine_software	—	—
cisco	cisco_identity_services_engine_software	—	—
cisco	cisco_identity_services_engine_software	—	—
cisco	cisco_identity_services_engine_software	—	—

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.

CWE-78