Auth bypass in Cisco Identity Services Engine Software

CVE-2026-20286

A vulnerability in the web-based management interface of Cisco Identify Services Engine (ISE) could allow an authenticated, remote attacker to modify parts of the configuration on an affected device. This vulnerability is due to the lack of server-side validation of Administrator permissions. An attacker could exploit this vulnerability by submitting a crafted HTTP request to an affected system. A successful exploit could allow the attacker to modify descriptions of files on a specific page. To exploit this vulnerability, an attacker would need valid Administrator credentials.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-20286?
CVE-2026-20286 is a medium-severity vulnerability in Cisco Identity Services Engine Software, classified under Improper Authorization. CVSS score: 4.3/10. Published 2026-09-16.
How severe is CVE-2026-20286?
Medium severity. CVSS v3 base score is 4.3 out of 10.