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CVE-2026-20194

Cisco Identity Services Engine Hardening Release - Incorrect Resource Transfer Vulnerabilities

Published: Sep 16, 2026Updated: Sep 18, 2026 Sources: CVE List NVDCWE-669
9.1CRITICAL
NVD MITRE
EPSS Score
0.4%
Top 61.8%
CISA KEV
Not in KEV
Exploits
0 Known
Remediation
No Fix Available
Self-Check
Not available

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-2026-20194 are related to incorrect resource transfer between spheres that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-669.

In plain language

AI Act now

Businesses using Cisco Identity Services Engine or its Passive Identity Connector should treat this critical flaw as urgent because public exploit code is available and no fix information has been published.

Executive summary

CVE-2026-20194 is a CVSS 9.1 incorrect resource-transfer vulnerability (CWE-669) in Cisco Identity Services Engine and Cisco ISE Passive Identity Connector, with network access and high-privilege credentials required.

If affected, business impact
Full system compromiseIdentity-service disruptionSensitive data exposureUnauthorized configuration changes

What to do now

  1. Check whether your organization runs Cisco Identity Services Engine or Cisco ISE Passive Identity Connector, including administrator-managed appliances.
  2. Restrict management access to trusted administrator networks and review privileged accounts while a fix is unavailable.
  3. Check Cisco's security advisory for CVE-2026-20194 regularly; Cisco has not published a fixed version or patch information yet.
  4. Ask your IT provider to review administrator activity and unexpected configuration changes on these systems.
May need vendor / contractor work

CVSS Vector Breakdown

AV:NAC:LPR:HUI:NS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-669

Affected Products

Cisco
commercial·USaka cisco systems inc., cisco systems
Cisco Identity Services Engine Software
Networking Infrastructure
Cisco ISE Passive Identity Connector
Networking Infrastructure

Exploitability

0 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Is your org exposed to CVE-2026-20194?Request an assessment to establish which checks are appropriate for your systems. Check my exposure

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-ise-XU5EwX5T
sec.cloudapps.cisco.com
News mentions
1

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