Description
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC), engineering teams have conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20237 are related to improper input validation issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-20.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected products
- Cisco / Cisco Identity Services Engine Software3.1.0 – 3.1.0
- Cisco / Cisco Identity Services Engine Software3.1.0 p1 – 3.1.0 p1
- Cisco / Cisco Identity Services Engine Software3.1.0 p3 – 3.1.0 p3
- Cisco / Cisco Identity Services Engine Software3.1.0 p2 – 3.1.0 p2
- Cisco / Cisco Identity Services Engine Software3.2.0 – 3.2.0
- Cisco / Cisco Identity Services Engine Software3.1.0 p4 – 3.1.0 p4
- Cisco / Cisco Identity Services Engine Software3.1.0 p5 – 3.1.0 p5
- Cisco / Cisco Identity Services Engine Software3.2.0 p1 – 3.2.0 p1
- Cisco / Cisco Identity Services Engine Software3.1.0 p6 – 3.1.0 p6
- Cisco / Cisco Identity Services Engine Software3.2.0 p2 – 3.2.0 p2
- Cisco / Cisco Identity Services Engine Software3.1.0 p7 – 3.1.0 p7
- Cisco / Cisco Identity Services Engine Software3.3.0 – 3.3.0
- Cisco / Cisco Identity Services Engine Software3.2.0 p3 – 3.2.0 p3
- Cisco / Cisco Identity Services Engine Software3.2.0 p4 – 3.2.0 p4
- Cisco / Cisco Identity Services Engine Software3.1.0 p8 – 3.1.0 p8
- Cisco / Cisco Identity Services Engine Software3.2.0 p5 – 3.2.0 p5
- Cisco / Cisco Identity Services Engine Software3.2.0 p6 – 3.2.0 p6
- Cisco / Cisco Identity Services Engine Software3.1.0 p9 – 3.1.0 p9
- Cisco / Cisco Identity Services Engine Software3.3 Patch 2 – 3.3 Patch 2
- Cisco / Cisco Identity Services Engine Software3.3 Patch 1 – 3.3 Patch 1
- Cisco / Cisco Identity Services Engine Software3.3 Patch 3 – 3.3 Patch 3
- Cisco / Cisco Identity Services Engine Software3.4.0 – 3.4.0
- Cisco / Cisco Identity Services Engine Software3.2.0 p7 – 3.2.0 p7
- Cisco / Cisco Identity Services Engine Software3.3 Patch 4 – 3.3 Patch 4
- Cisco / Cisco Identity Services Engine Software3.4 Patch 1 – 3.4 Patch 1
- Cisco / Cisco Identity Services Engine Software3.1.0 p10 – 3.1.0 p10
- Cisco / Cisco Identity Services Engine Software3.3 Patch 5 – 3.3 Patch 5
- Cisco / Cisco Identity Services Engine Software3.3 Patch 6 – 3.3 Patch 6
- Cisco / Cisco Identity Services Engine Software3.4 Patch 2 – 3.4 Patch 2
- Cisco / Cisco Identity Services Engine Software3.3 Patch 7 – 3.3 Patch 7
- Cisco / Cisco Identity Services Engine Software3.4 Patch 3 – 3.4 Patch 3
- Cisco / Cisco Identity Services Engine Software3.5.0 – 3.5.0
- Cisco / Cisco Identity Services Engine Software3.4 Patch 4 – 3.4 Patch 4
- Cisco / Cisco Identity Services Engine Software3.3 Patch 8 – 3.3 Patch 8
- Cisco / Cisco Identity Services Engine Software3.2 Patch 8 – 3.2 Patch 8
- Cisco / Cisco Identity Services Engine Software3.5 Patch 1 – 3.5 Patch 1
- Cisco / Cisco Identity Services Engine Software3.3 Patch 9 – 3.3 Patch 9
- Cisco / Cisco Identity Services Engine Software3.2 Patch 9 – 3.2 Patch 9
- Cisco / Cisco Identity Services Engine Software3.4 Patch 5 – 3.4 Patch 5
- Cisco / Cisco Identity Services Engine Software3.5 Patch 3 – 3.5 Patch 3
- Cisco / Cisco Identity Services Engine Software3.5 Patch 2 – 3.5 Patch 2
- Cisco / Cisco Identity Services Engine Software3.3 Patch 10 – 3.3 Patch 10
- Cisco / Cisco Identity Services Engine Software3.3 Patch 11 – 3.3 Patch 11
- Cisco / Cisco Identity Services Engine Software3.4 Patch 6 – 3.4 Patch 6
- Cisco / Cisco Identity Services Engine Software3.2 Patch 10 – 3.2 Patch 10
- Cisco / Cisco Identity Services Engine Software3.1.0 p72 – 3.1.0 p72
- Cisco / Cisco Identity Services Engine Software3.1.0 p11 – 3.1.0 p11
- Cisco / Cisco ISE Passive Identity Connector3.2.0 – 3.2.0
- Cisco / Cisco ISE Passive Identity Connector3.1.0 – 3.1.0
- Cisco / Cisco ISE Passive Identity Connector3.3.0 – 3.3.0
- Cisco / Cisco ISE Passive Identity Connector3.4.0 – 3.4.0
- Cisco / Cisco ISE Passive Identity Connector3.5.0 – 3.5.0
Updated 10m ago · 8 sources