# CVE-2026-20190: Cisco Identity Services Engine Information Disclosure Vulnerability

> Unauthenticated remote attackers can view sensitive information, including hashed credentials, due to improper authorization checks in Cisco ISE.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 17 Jun 2026
- **Updated:** 17 Jun 2026
- **Also known as:** GHSA-6x4j-83f8-hhx2

## What is CVE-2026-20190?

CVE-2026-20190 is a high-severity missing authorization vulnerability in Cisco Identity Services Engine, published on 17 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability in Cisco ISE and ISE-PIC could allow an unauthenticated, remote attacker to view sensitive information on an affected device.

This vulnerability is due to improper authorization checks when a resource is accessed. An attacker could exploit this vulnerability by sending crafted traffic to an affected device. A successful exploit could allow the attacker to gain access to sensitive information, including hashed credentials that could be used in future attacks.

Weakness: CWE-285 (Improper Authorization)

## Which versions are affected by CVE-2026-20190?

It affects 2 products.


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

## How do I fix CVE-2026-20190?

No fix has been published for CVE-2026-20190 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-20190 being exploited?

There is no known exploitation of CVE-2026-20190 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-2026-20192](https://insights.sbomify.com/CVE-2026-20192/): Cisco Identity Services Engine Hardening Release - Access Control Vulnerabilities (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-20190 and fix it if it is affected.

What it is: CVE-2026-20190 is a high-severity missing authorization vulnerability in Cisco Identity Services Engine, published on 17 Jun 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-2026-20190 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-2026-20190/ (Markdown: https://insights.sbomify.com/CVE-2026-20190/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-20190
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-20190
- OSV: https://osv.dev/vulnerability/CVE-2026-20190

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-20190/
Summaries are generated and may contain mistakes; the official description above is the record.