AI analysis
CVE-2026-20192 tracks a set of improper access control vulnerabilities (CWE-284) in Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC), discovered by Cisco's own engineering teams during a comprehensive internal security review. The flaws are addressed through a software hardening release rather than an externally reported incident, and Cisco has not disclosed granular per-flaw mechanics in the available data. The CVSS 3.1 score of 10.0 (critical) indicates the issues are remotely exploitable over a network without privileges or user interaction, with high impact to confidentiality, integrity, and availability across security scopes, meaning an attacker could gain broad access or control within affected deployments. All organizations running Cisco ISE or ISE-PIC are potentially affected. There is currently no known exploitation, no public proof-of-concept, and the vulnerability is not listed in CISA's Known Exploited Vulnerabilities catalog.
What to do: Review Cisco's security advisory (from Cisco PSIRT) to identify which ISE and ISE-PIC releases are affected, and apply the software hardening release as soon as practical. Until patched, restrict access to ISE administration, pxGrid, and passive-identity interfaces to trusted management networks, and monitor Cisco's advisory for updates on exploitation status.
Affected
| Cisco Identity Services Engine (ISE) | — |
| Cisco ISE Passive Identity Connector (ISE-PIC) | — |
Estimated exposure
largetens of thousands of enterprise ISE/ISE-PIC deployments worldwide, with only a smaller subset exposing management interfaces to untrusted networks — Cisco ISE is a market-leading network access control and identity platform deployed broadly across large enterprises and government networks, but it is typically deployed on internal networks, limiting internet-reachable exposure to a…
Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.
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.