Improper Authorization Vulnerability in Cisco Identity Services Engine
CVE-2026-20190

7.5HIGH

Key Information:

Vendor

Cisco
Status
Cisco Identity Services Engine Software
Cisco Ise Passive Identity Connector
Vendor
CVE Published:
17 June 2026

Badges

👾 Exploit Exists

What is CVE-2026-20190?

A vulnerability exists in Cisco Identity Services Engine (ISE) and its Policy Infrastructure Controller (ISE-PIC), allowing unauthenticated remote attackers to exploit improper authorization checks. By sending specially crafted traffic to affected devices, attackers can potentially gain access to sensitive information, including hashed credentials. This exposure could facilitate further attacks against the system.

Affected Version(s)

Cisco Identity Services Engine Software 3.4.0

Cisco Identity Services Engine Software 3.4 Patch 1

Cisco Identity Services Engine Software 3.4 Patch 2

References

https://sec.cloudapps.cisco.com/security/center/content/C...

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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