ZDI-26-580: Cisco Identity Services Engine Missing Authentication for Critical Function Information Disclosure Vulnerability

Published Aug 13, 2026
·
Updated

The vulnerability allows remote attackers to disclose sensitive information on affected installations of Cisco Identity Services Engine. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.5. The following CVEs are assigned: CVE-2026-20190.

Affected Software

1 affected component
Cisco Identity Services Engine

Event History

Aug 13, 2026
Advisory Published
via ZDI·05:00 AM
Data Sourced
via ZDI·05:00 AM
Description

Frequently Asked Questions

1

What is the severity of ZDI-26-580?

The severity of ZDI-26-580 has been assigned a CVSS rating of 7.5.

2

How do I fix ZDI-26-580?

To fix ZDI-26-580, users should apply the security patches provided by Cisco for the Identity Services Engine.

3

Who is affected by ZDI-26-580?

ZDI-26-580 affects installations of Cisco Identity Services Engine that have not been updated to address the vulnerability.

4

What type of vulnerability is ZDI-26-580?

ZDI-26-580 is an information disclosure vulnerability that allows remote attackers to access sensitive information.

5

Is authentication required to exploit ZDI-26-580?

No, authentication is not required to exploit ZDI-26-580, making it particularly concerning.

Contact

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