CVE-2026-20147

Severity

CRITICAL

CVSS

9.9

EPSS

0.11679

Risk score

43.69

CISA KEV

PoC

Published

2026-04-15

Modified

2026-04-16

First seen

2026-08-07

Aliases

EUVD-2026-22962, GHSA-6M6H-8F8V-R7J4

Products

Cisco:Cisco ISE Passive Identity Connector 3.1.0, Cisco:Cisco ISE Passive Identity Connector 3.2.0, Cisco:Cisco ISE Passive Identity Connector 3.3.0, Cisco:Cisco ISE Passive Identity Connector 3.4.0, Cisco:Cisco Identity Services Engine Software 3.1.0, Cisco:Cisco Identity Services Engine Software 3.1.0 p1, Cisco:Cisco Identity Services Engine Software 3.1.0 p10, Cisco:Cisco Identity Services Engine Software 3.1.0 p2, Cisco:Cisco Identity Services Engine Software 3.1.0 p3, Cisco:Cisco Identity Services Engine Software 3.1.0 p4, Cisco:Cisco Identity Services Engine Software 3.1.0 p5, Cisco:Cisco Identity Services Engine Software 3.1.0 p6, Cisco:Cisco Identity Services Engine Software 3.1.0 p7, Cisco:Cisco Identity Services Engine Software 3.1.0 p8, Cisco:Cisco Identity Services Engine Software 3.1.0 p9, Cisco:Cisco Identity Services Engine Software 3.2 Patch 8, Cisco:Cisco Identity Services Engine Software 3.2 Patch 9, Cisco:Cisco Identity Services Engine Software 3.2.0, Cisco:Cisco Identity Services Engine Software 3.2.0 p1, Cisco:Cisco Identity Services Engine Software 3.2.0 p2, Cisco:Cisco Identity Services Engine Software 3.2.0 p3, Cisco:Cisco Identity Services Engine Software 3.2.0 p4, Cisco:Cisco Identity Services Engine Software 3.2.0 p5, Cisco:Cisco Identity Services Engine Software 3.2.0 p6, Cisco:Cisco Identity Services Engine Software 3.2.0 p7, Cisco:Cisco Identity Services Engine Software 3.3 Patch 1, Cisco:Cisco Identity Services Engine Software 3.3 Patch 2, Cisco:Cisco Identity Services Engine Software 3.3 Patch 3, Cisco:Cisco Identity Services Engine Software 3.3 Patch 4, Cisco:Cisco Identity Services Engine Software 3.3 Patch 5, Cisco:Cisco Identity Services Engine Software 3.3 Patch 6, Cisco:Cisco Identity Services Engine Software 3.3 Patch 7, Cisco:Cisco Identity Services Engine Software 3.3 Patch 8, Cisco:Cisco Identity Services Engine Software 3.3 Patch 9, Cisco:Cisco Identity Services Engine Software 3.3.0, Cisco:Cisco Identity Services Engine Software 3.4 Patch 1, Cisco:Cisco Identity Services Engine Software 3.4 Patch 2, Cisco:Cisco Identity Services Engine Software 3.4 Patch 3, Cisco:Cisco Identity Services Engine Software 3.4 Patch 4, Cisco:Cisco Identity Services Engine Software 3.4 Patch 5, Cisco:Cisco Identity Services Engine Software 3.4.0, Cisco:Cisco Identity Services Engine Software 3.5 Patch 1, Cisco:Cisco Identity Services Engine Software 3.5 Patch 2, Cisco:Cisco Identity Services Engine Software 3.5.0

Sources

euvd EUVD-2026-22962

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.

Description

References