Cisco ISE API Authentication Bypass Vulnerability

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-76423
StatePUBLISHED
Assignercisco
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-16 20:17:28 UTC
Updated2026-09-17 04:18:01 UTC
DescriptionA vulnerability in the REST API of Cisco ISE and Cisco ISE-PIC could allow an unauthenticated, remote attacker to gain administrative access to an affected device. This vulnerability is due to the REST API web service being exposed with insufficient authorization checks. An attacker could exploit this vulnerability by sending a crafted HTTP request to the exposed REST API port. A successful exploit could allow the attacker to read and modify ISE configuration and identity data with administrative privileges.

Risk And Classification

Primary CVSS: v3.1 10 CRITICAL from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L

Problem Types: CWE-290 | CWE-290 Authentication Bypass by Spoofing

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary10CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L
3.1CNACVSSV3_110CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Cisco Cisco Identity Services Engine Software affected 3.1.0 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.1.0 p1 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.1.0 p3 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.1.0 p2 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.2.0 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.1.0 p4 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.1.0 p5 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.2.0 p1 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.1.0 p6 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.2.0 p2 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.1.0 p7 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.3.0 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.2.0 p3 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.2.0 p4 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.1.0 p8 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.2.0 p5 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.2.0 p6 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.1.0 p9 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.3 Patch 2 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.3 Patch 1 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.3 Patch 3 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.4.0 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.2.0 p7 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.3 Patch 4 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.4 Patch 1 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.1.0 p10 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.3 Patch 5 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.3 Patch 6 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.4 Patch 2 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.3 Patch 7 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.4 Patch 3 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.5.0 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.4 Patch 4 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.3 Patch 8 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.2 Patch 8 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.5 Patch 1 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.3 Patch 9 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.2 Patch 9 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.4 Patch 5 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.5 Patch 3 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.5 Patch 2 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.3 Patch 10 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.3 Patch 11 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.4 Patch 6 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.2 Patch 10 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.1.0 p72 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.1.0 p11 Not specified
CNA Cisco Cisco Identity Services Engine Software affected 3.3 Patch 12 Not specified
CNA Cisco Cisco ISE Passive Identity Connector affected 3.2.0 Not specified
CNA Cisco Cisco ISE Passive Identity Connector affected 3.1.0 Not specified
CNA Cisco Cisco ISE Passive Identity Connector affected 3.3.0 Not specified
CNA Cisco Cisco ISE Passive Identity Connector affected 3.4.0 Not specified
CNA Cisco Cisco ISE Passive Identity Connector affected 3.5.0 Not specified

References

ReferenceSourceLinkTags
sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-mu... [email protected] sec.cloudapps.cisco.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Exploits

CNA: The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.

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