CVE-2026-76460

Published Sep 16, 2026

Last updated a month ago

Network

API

Overview

AI description

Automated description summarized from trusted sources.

CVE-2026-76460 is an authentication bypass vulnerability found in an API of Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC). This flaw stems from insufficient authentication control on a specific API endpoint. An unauthenticated, remote attacker can exploit this vulnerability by sending a specially crafted request to the affected API endpoint. Successful exploitation allows the attacker to bypass the web-based management interface and gain unauthorized access to the affected device. The vulnerability impacts Cisco ISE and ISE-PIC releases 3.0 through 3.5.

Description: A vulnerability in an API of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to bypass authentication. This vulnerability is due to insufficient authentication control on an API endpoint. An attacker could exploit this vulnerability by sending a crafted request to an affected API endpoint. A successful exploit could allow the attacker to gain unauthorized access to the affected device by bypassing the web-based management interface.
Source: psirt@cisco.com
NVD status: Analyzed
Products: identity_services_engine, identity_services_engine_passive_identity_connector

Risk scores

CVSS 3.1

Type: Secondary
Base score: 10
Impact score: 6
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Severity: CRITICAL

Known exploits

Data from CISA

Vulnerability name: Cisco Identity Services Engine Incorrect Use of Privileged APIs Vulnerability
Exploit added on: Sep 16, 2026
Exploit action due: Sep 19, 2026
Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Weaknesses

psirt@cisco.com: CWE-648

Hype score: Not currently trending

Configurations

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            "criteria": "cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch6:*:*:*:*:*:*",
            "matchCriteriaId": "768215B1-80B7-40FF-8772-BA4C0B3913F5",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch7:*:*:*:*:*:*",
            "matchCriteriaId": "40239DA8-43B6-466B-85B0-6D644D7027D1",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch8:*:*:*:*:*:*",
            "matchCriteriaId": "9118B7ED-E678-47C3-9D17-F522D9362B2F",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.3.0:patch9:*:*:*:*:*:*",
            "matchCriteriaId": "C2ED3257-CB9D-4FD5-A482-3648CF292128",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:-:*:*:*:*:*:*",
            "matchCriteriaId": "CC0525FD-C4D7-4B48-BF35-1791391AB148",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch1:*:*:*:*:*:*",
            "matchCriteriaId": "68C96F6B-51EE-4D03-9598-CBFD16DA22EF",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch2:*:*:*:*:*:*",
            "matchCriteriaId": "62F25185-D19E-4EC5-8A68-7AB669B76E90",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch3:*:*:*:*:*:*",
            "matchCriteriaId": "C457D2EC-FB63-49B7-A90E-CE67ED763BAE",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch4:*:*:*:*:*:*",
            "matchCriteriaId": "6566330F-A048-44A1-9821-7A5844C82CEC",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch5:*:*:*:*:*:*",
            "matchCriteriaId": "1154F196-2CB3-4AC2-BE00-11A8942EA999",
            "vulnerable": true
          },
          {
            "criteria": "cpe:2.3:a:cisco:identity_services_engine_passive_identity_connector:3.4.0:patch6:*:*:*:*:*:*",
            "matchCriteriaId": "7E30ECF6-5B1D-4280-AA02-123153E68F28",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ]
  }
]

References

Sources include official advisories and independent security research.