CVE-2026-76439
Analyzed
Analyzed - Analysis Complete
BaseFortify
Vulnerability report for CVE-2026-76439, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-09-16
Last updated on: 2026-09-28
Assigner: Cisco Systems, Inc.
Description
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.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| cisco | identity_services_engine | 3.4.0 |
| cisco | identity_services_engine | 3.3.0 |
| cisco | identity_services_engine | 3.3.0 |
| cisco | identity_services_engine | 3.3.0 |
| cisco | identity_services_engine | 3.3.0 |
| cisco | identity_services_engine | 3.3.0 |
| cisco | identity_services_engine | 3.4.0 |
| cisco | identity_services_engine | 3.3.0 |
| cisco | identity_services_engine | to 3.3.0 (exc) |
| cisco | identity_services_engine | 3.4.0 |
| cisco | identity_services_engine | 3.4.0 |
| cisco | identity_services_engine | 3.3.0 |
| cisco | identity_services_engine | 3.4.0 |
| cisco | identity_services_engine | 3.4.0 |
| cisco | identity_services_engine | 3.5.0 |
| cisco | identity_services_engine | 3.5.0 |
| cisco | identity_services_engine | 3.5.0 |
| cisco | identity_services_engine | 3.3.0 |
| cisco | identity_services_engine | 3.3.0 |
| cisco | identity_services_engine | 3.3.0 |
| cisco | identity_services_engine | 3.5.0 |
| cisco | identity_services_engine | 3.3.0 |
| cisco | identity_services_engine | 3.4.0 |
| cisco | identity_services_engine_passive_identity_connector | 3.3.0 |
| cisco | identity_services_engine_passive_identity_connector | 3.3.0 |
| cisco | identity_services_engine_passive_identity_connector | 3.3.0 |
| cisco | identity_services_engine_passive_identity_connector | 3.3.0 |
| cisco | identity_services_engine_passive_identity_connector | 3.3.0 |
| cisco | identity_services_engine_passive_identity_connector | 3.4.0 |
| cisco | identity_services_engine_passive_identity_connector | 3.4.0 |
| cisco | identity_services_engine_passive_identity_connector | 3.3.0 |
| cisco | identity_services_engine_passive_identity_connector | to 3.3.0 (exc) |
| cisco | identity_services_engine_passive_identity_connector | 3.4.0 |
| cisco | identity_services_engine_passive_identity_connector | 3.4.0 |
| cisco | identity_services_engine_passive_identity_connector | 3.4.0 |
| cisco | identity_services_engine_passive_identity_connector | 3.4.0 |
| cisco | identity_services_engine_passive_identity_connector | 3.3.0 |
| cisco | identity_services_engine_passive_identity_connector | 3.3.0 |
| cisco | identity_services_engine_passive_identity_connector | 3.3.0 |
| cisco | identity_services_engine_passive_identity_connector | 3.3.0 |
| cisco | identity_services_engine_passive_identity_connector | 3.3.0 |
| cisco | identity_services_engine_passive_identity_connector | 3.4.0 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-306 | The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. |
