CVE-2026-20285
Cisco Identity Services Engine Authorization Bypass Vulnerability
Description
A vulnerability in the web-based management interface of Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) 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.
Weakness: CWE-285
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco ISE Passive Identity Connector | Identity / IAM / MFA | cna-assigner |
| Cisco | Cisco Identity Services Engine (ISE) Check your version | Identity / IAM / MFA | cna-assigner |
Vendor-reported products (2)
- Cisco · Cisco Identity Services Engine Software
- Cisco · Cisco ISE Passive Identity Connector
Vendor advisory
cisco-sa-ise-auth-bypass-1-MxcTNgwx
Cisco Identity Services Engine Authorization Bypass Vulnerabilities
Cisco’s rating: Medium (advisory CVSS 4.3) · Published Sep 16, 2026
Bug IDs: CSCwt62639 , CSCwt62644
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from