# CVE-2026-22569: Incorrect startup configuration in ZCC

> Incorrect startup configuration in Zscaler Client Connector for Windows may allow limited traffic to bypass inspection under rare circumstances.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 31 Mar 2026
- **Updated:** 31 Mar 2026
- **Also known as:** GHSA-m6c6-h9pc-2f7x

## What is CVE-2026-22569?

CVE-2026-22569 is a medium-severity vulnerability in Zscaler Client Connector, published on 31 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

An incorrect startup configuration of affected versions of Zscaler Client Connector on Windows may cause a limited amount of traffic from being inspected under rare circumstances.

Weakness: CWE-1289 (Improper Validation of Unsafe Equivalence in Input)

## Which versions are affected by CVE-2026-22569?

It affects 1 product.


Products: Zscaler Client Connector.

## How do I fix CVE-2026-22569?

No fix has been published for CVE-2026-22569 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-22569 being exploited?

There is no known exploitation of CVE-2026-22569 in the wild and no public exploit code.

## Other vulnerabilities in Zscaler Client Connector

- [CVE-2020-11633](https://insights.sbomify.com/CVE-2020-11633/): Memory corruption in n/a (critical 9.8)
- [CVE-2024-23463](https://insights.sbomify.com/CVE-2024-23463/): Anti-Tampering bypass via Repair App functionality (high 8.8)
- [CVE-2023-28804](https://insights.sbomify.com/CVE-2023-28804/): Linux ZCC allows unsigned updates, allowing elevated Code Execution (high 8.2)
- [CVE-2023-28799](https://insights.sbomify.com/CVE-2023-28799/): Open redirect in Client Connector (high 8.2)
- [CVE-2023-28800](https://insights.sbomify.com/CVE-2023-28800/): Output encoding missing in redrurl parameter (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-22569 and fix it if it is affected.

What it is: CVE-2026-22569 is a medium-severity vulnerability in Zscaler Client Connector, published on 31 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-22569 in the wild and no public exploit code.

Affected product: Zscaler Client Connector. 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-2026-22569/ (Markdown: https://insights.sbomify.com/CVE-2026-22569/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-22569
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-22569
- OSV: https://osv.dev/vulnerability/CVE-2026-22569

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-22569/
Summaries are generated and may contain mistakes; the official description above is the record.