CVE-2026-76439

Summary

A vulnerability in the endpoint posture status reporting functionality of the guest portal web application of Cisco ISE could allow an unauthenticated, remote attacker to submit forged posture status events into the endpoint posture pipeline.

This vulnerability is due to insufficient authentication on an internal interface that is exposed through the guest portal. An attacker could exploit this vulnerability by sending a crafted request to an affected system. A successful exploit could allow the attacker to manipulate the posture status on the affected system.

Affected Software

VendorProductVersion RangeStatus
CiscoCisco Identity Services Engine Software3.1.0affected
CiscoCisco Identity Services Engine Software3.1.0 p1affected
CiscoCisco Identity Services Engine Software3.1.0 p3affected
CiscoCisco Identity Services Engine Software3.1.0 p2affected
CiscoCisco Identity Services Engine Software3.2.0affected
CiscoCisco Identity Services Engine Software3.1.0 p4affected
CiscoCisco Identity Services Engine Software3.1.0 p5affected
CiscoCisco Identity Services Engine Software3.2.0 p1affected
CiscoCisco Identity Services Engine Software3.1.0 p6affected
CiscoCisco Identity Services Engine Software3.2.0 p2affected
CiscoCisco Identity Services Engine Software3.1.0 p7affected
CiscoCisco Identity Services Engine Software3.3.0affected
CiscoCisco Identity Services Engine Software3.2.0 p3affected
CiscoCisco Identity Services Engine Software3.2.0 p4affected
CiscoCisco Identity Services Engine Software3.1.0 p8affected
CiscoCisco Identity Services Engine Software3.2.0 p5affected
CiscoCisco Identity Services Engine Software3.2.0 p6affected
CiscoCisco Identity Services Engine Software3.1.0 p9affected
CiscoCisco Identity Services Engine Software3.3 Patch 2affected
CiscoCisco Identity Services Engine Software3.3 Patch 1affected
CiscoCisco Identity Services Engine Software3.3 Patch 3affected
CiscoCisco Identity Services Engine Software3.4.0affected
CiscoCisco Identity Services Engine Software3.2.0 p7affected
CiscoCisco Identity Services Engine Software3.3 Patch 4affected
CiscoCisco Identity Services Engine Software3.4 Patch 1affected
CiscoCisco Identity Services Engine Software3.1.0 p10affected
CiscoCisco Identity Services Engine Software3.3 Patch 5affected
CiscoCisco Identity Services Engine Software3.3 Patch 6affected
CiscoCisco Identity Services Engine Software3.4 Patch 2affected
CiscoCisco Identity Services Engine Software3.3 Patch 7affected
CiscoCisco Identity Services Engine Software3.4 Patch 3affected
CiscoCisco Identity Services Engine Software3.5.0affected
CiscoCisco Identity Services Engine Software3.4 Patch 4affected
CiscoCisco Identity Services Engine Software3.3 Patch 8affected
CiscoCisco Identity Services Engine Software3.2 Patch 8affected
CiscoCisco Identity Services Engine Software3.5 Patch 1affected
CiscoCisco Identity Services Engine Software3.3 Patch 9affected
CiscoCisco Identity Services Engine Software3.2 Patch 9affected
CiscoCisco Identity Services Engine Software3.4 Patch 5affected
CiscoCisco Identity Services Engine Software3.5 Patch 3affected
CiscoCisco Identity Services Engine Software3.5 Patch 2affected
CiscoCisco Identity Services Engine Software3.3 Patch 10affected
CiscoCisco Identity Services Engine Software3.3 Patch 11affected
CiscoCisco Identity Services Engine Software3.4 Patch 6affected
CiscoCisco Identity Services Engine Software3.2 Patch 10affected
CiscoCisco Identity Services Engine Software3.1.0 p72affected
CiscoCisco Identity Services Engine Software3.1.0 p11affected
CiscoCisco ISE Passive Identity Connector3.2.0affected
CiscoCisco ISE Passive Identity Connector3.1.0affected
CiscoCisco ISE Passive Identity Connector3.3.0affected
CiscoCisco ISE Passive Identity Connector3.4.0affected
CiscoCisco ISE Passive Identity Connector3.5.0affected

Weaknesses

  • CWE-306: Missing Authentication for Critical Function

References