Public mode

No access to your tenant or devices. Every item links to its source. What this means

CVE-2026-76439

Cisco Identity Services Engine Event Injection Vulnerability

CVSS 3.1 5.3 MEDIUMCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-76439

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-76439

Published

Cisco Identity Services Engine Software

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Cisco",
                    "product": "Cisco Identity Services Engine Software",
                    "versions": [
                        {
                            "version": "3.1.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.0 p1",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.0 p3",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.0 p2",
                            "status": "affected"
                        },
                        {
                            "version": "3.2.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.0 p4",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.0 p5",
                            "status": "affected"
                        },
                        {
                            "version": "3.2.0 p1",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.0 p6",
                            "status": "affected"
                        },
                        {
                            "version": "3.2.0 p2",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.0 p7",
                            "status": "affected"
                        },
                        {
                            "version": "3.3.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.2.0 p3",
                            "status": "affected"
                        },
                        {
                            "version": "3.2.0 p4",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.0 p8",
                            "status": "affected"
                        },
                        {
                            "version": "3.2.0 p5",
                            "status": "affected"
                        },
                        {
                            "version": "3.2.0 p6",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.0 p9",
                            "status": "affected"
                        },
                        {
                            "version": "3.3 Patch 2",
                            "status": "affected"
                        },
                        {
                            "version": "3.3 Patch 1",
                            "status": "affected"
                        },
                        {
                            "version": "3.3 Patch 3",
                            "status": "affected"
                        },
                        {
                            "version": "3.4.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.2.0 p7",
                            "status": "affected"
                        },
                        {
                            "version": "3.3 Patch 4",
                            "status": "affected"
                        },
                        {
                            "version": "3.4 Patch 1",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.0 p10",
                            "status": "affected"
                        },
                        {
                            "version": "3.3 Patch 5",
                            "status": "affected"
                        },
                        {
                            "version": "3.3 Patch 6",
                            "status": "affected"
                        },
                        {
                            "version": "3.4 Patch 2",
                            "status": "affected"
                        },
                        {
                            "version": "3.3 Patch 7",
                            "status": "affected"
                        },
                        {
                            "version": "3.4 Patch 3",
                            "status": "affected"
                        },
                        {
                            "version": "3.5.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.4 Patch 4",
                            "status": "affected"
                        },
                        {
                            "version": "3.3 Patch 8",
                            "status": "affected"
                        },
                        {
                            "version": "3.2 Patch 8",
                            "status": "affected"
                        },
                        {
                            "version": "3.5 Patch 1",
                            "status": "affected"
                        },
                        {
                            "version": "3.3 Patch 9",
                            "status": "affected"
                        },
                        {
                            "version": "3.2 Patch 9",
                            "status": "affected"
                        },
                        {
                            "version": "3.4 Patch 5",
                            "status": "affected"
                        },
                        {
                            "version": "3.5 Patch 3",
                            "status": "affected"
                        },
                        {
                            "version": "3.5 Patch 2",
                            "status": "affected"
                        },
                        {
                            "version": "3.3 Patch 10",
                            "status": "affected"
                        },
                        {
                            "version": "3.3 Patch 11",
                            "status": "affected"
                        },
                        {
                            "version": "3.4 Patch 6",
                            "status": "affected"
                        },
                        {
                            "version": "3.2 Patch 10",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.0 p72",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.0 p11",
                            "status": "affected"
                        }
                    ],
                    "defaultStatus": "unknown"
                }

Cisco ISE Passive Identity Connector

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Cisco",
                    "product": "Cisco ISE Passive Identity Connector",
                    "versions": [
                        {
                            "version": "3.2.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.3.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.4.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.5.0",
                            "status": "affected"
                        }
                    ],
                    "defaultStatus": "unknown"
                }

Original source record · Cite this exact observation · Complete original publisher JSON