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CVE-2026-20192— Cisco Identity Services Engine Hardening Release - Access Control Vulnerabilities

Quick assessment

Affected

Cisco Cisco Identity Services Engine Software

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

作为思科持续推进主动式安全管理和产品质量提升举措的一部分，思科身份服务引擎（ISE）及思科 ISE 被动身份连接器（ISE-PIC）工程团队开展了一次全面的内部安全审查。此次审查促成了一次软件加固发布的发布，旨在解决多个内部发现的漏洞。由 CVE-2026-20192 跟踪的漏洞涉及不恰当的访问控制问题，这些问题被归类在通用弱点枚举（CWE）支柱 CWE-284 下。

CVSS 10.0 · Critical EPSS 0.46% · P40 Updated Sep 18, 2026

Possible ATT&CK Techniques 2 AI

T1079 T1556 · Modify Authentication Process

Affected Version Matrix 52

Vendor	Product	Version Range	Status
Cisco	Cisco Identity Services Engine Software	`3.1.0`	affected
		`3.1.0 p1`	affected
		`3.1.0 p3`	affected
		`3.1.0 p2`	affected
		`3.2.0`	affected
		`3.1.0 p4`	affected
		`3.1.0 p5`	affected
		`3.2.0 p1`	affected
… +39 more rows
Cisco	Cisco ISE Passive Identity Connector	`3.2.0`	affected
		`3.1.0`	affected
		`3.3.0`	affected
		`3.4.0`	affected
		`3.5.0`	affected

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Vulnerability Information

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Vulnerability Title

Cisco Identity Services Engine Hardening Release - Access Control Vulnerabilities

Source: CVE Program / CVE List V5

Vulnerability 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-2026-20192 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-284.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Source: CVE Program / CVE List V5

Vulnerability Type

访问控制不恰当

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Cisco	Cisco Identity Services Engine Software	3.1.0	-
Cisco	Cisco ISE Passive Identity Connector	3.2.0	-

II. Public POCs for CVE-2026-20192

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-20192

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Vendor Advisories for CVE-2026-20192 (1)

🔗 Cisco Identity Services Engine Hardening Release: September 2026 Read full article

https://www.cve.org/CVERecord?id=CVE-2026-20192

Same Patch Batch · Cisco · 2026-09-16 · 79 CVEs total

CVE-2026-76460	10.0 CRITICAL	Cisco Identity Services Engine Authentication Bypass Vulnerability
CVE-2026-76423	10.0 CRITICAL	Cisco ISE API Authentication Bypass Vulnerability
CVE-2026-20130	10.0 CRITICAL	Cisco Identity Services Engine Hardening Release - Improper Neutralization Vulnerabilities
CVE-2026-20332	9.9 CRITICAL	Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software
CVE-2026-20324	9.9 CRITICAL	Cisco Secure Firewall Management Center sftunnel Root Arbitrary Code Exectution Vulnerabil
CVE-2026-20330	9.9 CRITICAL	Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software
CVE-2026-20322	9.9 CRITICAL	Cisco Nexus Dashboard Software Security Hardening Release September 2026 - Improper Access
CVE-2026-20234	9.9 CRITICAL	Cisco Identity Services Engine Hardening Release - Insuffiencently Protected Credential Vu
CVE-2026-20329	9.9 CRITICAL	Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software
CVE-2026-20325	9.9 CRITICAL	Cisco Nexus Dashboard Software Security Hardening Release September 2026 - Improper Neutra
CVE-2026-20307	9.9 CRITICAL	Cisco Identity Services Engine Remote Code Execution Vulnerability
CVE-2026-20242	9.8 CRITICAL	Cisco Secure Firewall Management Center Software Java Deserialization Remote Code Executio
CVE-2026-20326	9.8 CRITICAL	Cisco Nexus Dashboard Software Security Hardening Release September 2026 - Missing Authent
CVE-2026-20331	9.6 CRITICAL	Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software
CVE-2026-20306	9.1 CRITICAL	Cisco Identity Services Engine Command Injection Vulnerability
CVE-2026-20305	9.1 CRITICAL	Cisco Identity Services Engine Command Injection Vulnerability
CVE-2026-20284	9.1 CRITICAL	Cisco Identity Search Engine SXP REST API SQL Injection Vulnerability
CVE-2026-20176	9.1 CRITICAL	Cisco Identity Services Engine Remote Code Execution Vulnerability
CVE-2026-20341	9.1 CRITICAL	Cisco Secure Firewall Management Center Software sftunnel Deserialization Root Command Exe
CVE-2026-20211	9.1 CRITICAL	Cisco Identity Services Engine Remote Code Execution Vulnerability

Showing top 20 of 79 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Cisco Identity Services Engine Software

Same vendor: Cisco

Same weakness: CWE-284