# CVE-2019-18177: Information disclosure in n/a

> Authenticated VPN users can disclose information via configured SSL VPN endpoints in Citrix ADC and Gateway products.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 Dec 2022
- **Updated:** 14 Apr 2025
- **Also known as:** GHSA-xqr7-fvpx-w934

## What is CVE-2019-18177?

CVE-2019-18177 is a medium-severity vulnerability in n/a, published on 26 Dec 2022. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

In certain Citrix products, information disclosure can be achieved by an authenticated VPN user when there is a configured SSL VPN endpoint. This affects Citrix ADC and Citrix Gateway 13.0-58.30 and later releases before the CTX276688 update.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2019-18177?

It affects 2 products.


Products: Citrix Application Delivery Controller Firmware, Citrix Gateway.

## How do I fix CVE-2019-18177?

No fix has been published for CVE-2019-18177 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-18177 being exploited?

There is no known exploitation of CVE-2019-18177 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2022-27518](https://insights.sbomify.com/CVE-2022-27518/): Citrix Application Delivery Controller (ADC) and Gateway Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2019-19781](https://insights.sbomify.com/CVE-2019-19781/): Citrix ADC, Gateway, and SD-WAN WANOP Appliance Code Execution (critical 9.8, exploited in the wild)
- [CVE-2020-8193](https://insights.sbomify.com/CVE-2020-8193/): Citrix ADC, Gateway, and SD-WAN WANOP Appliance Authorization Bypass (medium 6.5, exploited in the wild)
- [CVE-2020-8195](https://insights.sbomify.com/CVE-2020-8195/): Citrix ADC, Gateway, and SD-WAN WANOP Appliance Information Disclosure (medium 6.5, exploited in the wild)
- [CVE-2020-8196](https://insights.sbomify.com/CVE-2020-8196/): Citrix ADC, Gateway, and SD-WAN WANOP Appliance Information Disclosure (medium 4.3, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-18177 and fix it if it is affected.

What it is: CVE-2019-18177 is a medium-severity vulnerability in n/a, published on 26 Dec 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-18177 in the wild and no public exploit code.

Affected product: n/a. 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-2019-18177/ (Markdown: https://insights.sbomify.com/CVE-2019-18177/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-18177
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-18177
- OSV: https://osv.dev/vulnerability/CVE-2019-18177

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-18177/
Summaries are generated and may contain mistakes; the official description above is the record.