CVE-2025-20337

CriticalActively exploited (CISA KEV)

Description

A vulnerability in a specific API of Cisco ISE and Cisco ISE-PIC could allow an unauthenticated, remote attacker to execute arbitrary code on the underlying operating system as root. The attacker does not require any valid credentials to exploit this vulnerability. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by submitting a crafted API request. A successful exploit could allow the attacker to obtain root privileges on an affected device.

SeverityCritical
CVSS10.0
Exploit probability—
ProductCisco Identity Services Engine
PublishedJul 16, 2025
First seenJul 16, 2025
Added to KEVJul 28, 2025
Weakness typeCWE-74Injection

How to fix

CISA required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CISA due date: Aug 18, 2025

Affected products

ProductAffected versionsFixed in
cisco identity_services_engine3.3.0, 3.4.0—
cisco identity_services_engine_passive_identity_connector3.3.0, 3.4.0—

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