VDB
CVE-2026-76439
CVE-2026-76439
PUBLISHED
CVSS 5.3 MEDIUM
Reported by cisco · Published September 16, 2026
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.
Risk Scores
CVSS 3.1
5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco Identity Services Engine Software | 3.1.0, 3.1.0 p1, 3.1.0 p3 |
| Cisco | Cisco ISE Passive Identity Connector | 3.2.0, 3.1.0, 3.3.0 |
| Cisco | Cisco Identity Services Engine Software | 3.1.0, 3.1.0 p1, 3.1.0 p3 |
| Cisco | Cisco ISE Passive Identity Connector | 3.2.0, 3.1.0, 3.3.0 |
Timeline
- Sep 16, 2026 Coalition ESS Score
- Sep 16, 2026 CVE Published
- Sep 17, 2026 EPSS Score
- Sep 18, 2026 EPSS Score