Cisco Identity Services Engine Authentication Bypass Vulnerability
Published Sep 16, 2026 ·Due Sep 19, 2026
10.0
CRITICALCVSS 3.1
EPSS 14.03%
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.
Affected products
-
- Version 3.4.0StatusaffectedConstraints-
- Version 3.5.0StatusaffectedConstraints-
- Version
-
- Version 3.1.0 p10StatusaffectedConstraints-
- Version 3.1.0 p11StatusaffectedConstraints-
- Version 3.1.0 p8StatusaffectedConstraints-
- Version 3.1.0 p9StatusaffectedConstraints-
- Version 3.2 Patch 10StatusaffectedConstraints-
- Version 3.2 Patch 8StatusaffectedConstraints-
- Version 3.2 Patch 9StatusaffectedConstraints-
- Version 3.2.0 p7StatusaffectedConstraints-
- Version 3.3 Patch 1StatusaffectedConstraints-
- Version 3.3 Patch 10StatusaffectedConstraints-
- Version 3.3 Patch 11StatusaffectedConstraints-
- Version 3.3 Patch 2StatusaffectedConstraints-
- Version 3.3 Patch 3StatusaffectedConstraints-
- Version 3.3 Patch 4StatusaffectedConstraints-
- Version 3.3 Patch 5StatusaffectedConstraints-
- Version 3.3 Patch 6StatusaffectedConstraints-
- Version 3.3 Patch 7StatusaffectedConstraints-
- Version 3.3 Patch 8StatusaffectedConstraints-
- Version 3.3 Patch 9StatusaffectedConstraints-
- Version 3.4 Patch 1StatusaffectedConstraints-
- Version 3.4 Patch 2StatusaffectedConstraints-
- Version 3.4 Patch 3StatusaffectedConstraints-
- Version 3.4 Patch 4StatusaffectedConstraints-
- Version 3.4 Patch 5StatusaffectedConstraints-
- Version 3.4 Patch 6StatusaffectedConstraints-
- Version 3.4.0StatusaffectedConstraints-
- Version 3.5 Patch 1StatusaffectedConstraints-
- Version 3.5 Patch 2StatusaffectedConstraints-
- Version 3.5 Patch 3StatusaffectedConstraints-
- Version 3.5.0StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cisco | Cisco ISE Passive Identity Connector | n/a |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Cisco | Cisco Identity Services Engine Software | n/a |
|
Configuration 1
- 3.1.0
- 3.1.0
- 3.1.0
- 3.1.0
- 3.1.0
- 3.1.0
- 3.1.0
- 3.1.0
- 3.1.0
- 3.1.0
- 3.1.0
- 3.1.0
- 3.2.0
- 3.2.0
- 3.2.0
- 3.2.0
- 3.2.0
- 3.2.0
- 3.2.0
- 3.2.0
- 3.2.0
- 3.2.0
- 3.2.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.4.0
- 3.4.0
- 3.4.0
- 3.4.0
- 3.4.0
- 3.4.0
- 3.4.0
- 3.5.0
- 3.5.0
- 3.5.0
- 3.5.0
Configuration 2
- 3.1.0
- 3.1.0
- 3.1.0
- 3.1.0
- 3.1.0
- 3.1.0
- 3.1.0
- 3.1.0
- 3.1.0
- 3.1.0
- 3.1.0
- 3.1.0
- 3.2.0
- 3.2.0
- 3.2.0
- 3.2.0
- 3.2.0
- 3.2.0
- 3.2.0
- 3.2.0
- 3.2.0
- 3.2.0
- 3.2.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.3.0
- 3.4.0
- 3.4.0
- 3.4.0
- 3.4.0
- 3.4.0
- 3.4.0
- 3.4.0
- 3.5.0
- 3.5.0
- 3.5.0
- 3.5.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
Date Added
Sep 16, 2026
Patch 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.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
ActiveAutomatable
YesTechnical Impact
TotalDecision
n/aAssessed Sep 16, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Sep–Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 14.03% (0.14026) | 96.45th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.78% (0.00784) | 54.53th | v5 (v2026.06.15) |
| Sep 17, 2026 | 0.92% (0.00915) | 58.48th | v5 (v2026.06.15) |
References (2)
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ISE-ABP-VNSW7Tn5 MitigationVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-76460 government-resourceUS Government Resource
| Link | Providers | Tags |
|---|---|---|
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ISE-ABP-VNSW7Tn5 | MitigationVendor Advisory | |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-76460 | government-resourceUS Government Resource |
Change history (0)
No recorded changes yet.