CVE-2026-76439

MEDIUMCVSS 5.3

Description

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.

Timeline

Published:September 16th, 2026 9:17 PM

Last modified:September 28th, 2026 1:12 PM

CVSS Scoring

CVSS v3: 5.3 (MEDIUM)

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

Affected Software

From NVD CPE configuration data

Vendors

cisco

Products

identity_services_engineidentity_services_engine_passive_identity_connector

Weaknesses (CWE)

CWE-306

References & Reports

Advisories, patches, and third-party reports

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-multiauth-bypass-sgD2HbL4Vendor Advisory

Source: NIST NVD · Data may lag official sources by up to one minute