Medium severity · published Sep 16, 2026
CVE-2026-20286
Cisco Identity Services Engine Authorization Bypass Vulnerability
4.3
CVSS
0.5%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CI
Cisco Identity Services Engine Software · Cisco
3.1.0; 3.1.0 p1; 3.1.0 p3; 3.1.0 p2; 3.2.0; 3.1.0 p4; +34 more · source: vendor
Affected product
CI
Cisco Identity Services Engine Software
Cisco
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-20286
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-20286
sec.cloudapps.cisco.com
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-auth-bypass-1-MxcTNgwx
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