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

> Cisco ISE and ISE-PIC contain improper access control vulnerabilities allowing unauthorized actions, requiring a security hardening patch.

- **Severity:** Critical 10.0 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Sep 2026
- **Updated:** 18 Sep 2026
- **Also known as:** GHSA-m52c-gwq5-xchj

## What is CVE-2026-20192?

CVE-2026-20192 is a critical missing authorization vulnerability in Cisco Identity Services Engine, published on 16 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

Weakness: CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2026-20192?

It affects 2 products.


Products: Cisco Identity Services Engine, Cisco Identity Services Engine Passive Identity Connector.

## How do I fix CVE-2026-20192?

No fix has been published for CVE-2026-20192 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-20192 being exploited?

There is no known exploitation of CVE-2026-20192 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Identity Services Engine

- [CVE-2026-76460](https://insights.sbomify.com/CVE-2026-76460/): Cisco Identity Services Engine Incorrect Use of Privileged APIs (critical 10.0, exploited in the wild)
- [CVE-2025-20337](https://insights.sbomify.com/CVE-2025-20337/): Cisco Identity Services Engine Injection (critical 10.0, exploited in the wild)
- [CVE-2025-20281](https://insights.sbomify.com/CVE-2025-20281/): Cisco Identity Services Engine Injection (critical 10.0, exploited in the wild)
- [CVE-2026-20130](https://insights.sbomify.com/CVE-2026-20130/): Cisco Identity Services Engine Hardening Release - Improper Neutralization Vulnerabilities (critical 10.0)
- [CVE-2025-20282](https://insights.sbomify.com/CVE-2025-20282/): Cisco ISE API Unauthenticated Remote Code Execution Vulnerability (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-20192 and fix it if it is affected.

What it is: CVE-2026-20192 is a critical missing authorization vulnerability in Cisco Identity Services Engine, published on 16 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-20192 in the wild and no public exploit code.

Affected product: Cisco Identity Services Engine. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-20192/ (Markdown: https://insights.sbomify.com/CVE-2026-20192/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-20192
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-20192
- OSV: https://osv.dev/vulnerability/CVE-2026-20192

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-20192/
Summaries are generated and may contain mistakes; the official description above is the record.