# CVE-2019-11550: Security feature bypass in n/a

> Attackers can bypass certificate validation in Citrix SD-WAN, potentially enabling man-in-the-middle attacks or unauthorized access.

- **Severity:** Medium 5.9 (`CVSS:3.0/AV:N/AC:H/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:** 8 May 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-p53g-mf4j-5xxx

## What is CVE-2019-11550?

CVE-2019-11550 is a medium-severity vulnerability in n/a, published on 8 May 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Citrix SD-WAN 10.2.x before 10.2.1 and NetScaler SD-WAN 10.0.x before 10.0.7 have Improper Certificate Validation.

Weakness: CWE-295 (Improper Certificate Validation)

## Which versions are affected by CVE-2019-11550?

It affects 2 products.


Products: Citrix Netscaler Sd-Wan, Citrix Sd-Wan.

## How do I fix CVE-2019-11550?

No fix has been published for CVE-2019-11550 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-11550 being exploited?

There is no known exploitation of CVE-2019-11550 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2019-12989](https://insights.sbomify.com/CVE-2019-12989/): Citrix SD-WAN and NetScaler SQL Injection (critical 9.8, exploited in the wild)
- [CVE-2017-6316](https://insights.sbomify.com/CVE-2017-6316/): Citrix Multiple Products Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2019-12991](https://insights.sbomify.com/CVE-2019-12991/): Citrix SD-WAN and NetScaler Command Injection (high 8.8, exploited in the wild)
- [CVE-2019-12985](https://insights.sbomify.com/CVE-2019-12985/): Command injection in n/a (critical 9.8)
- [CVE-2019-12986](https://insights.sbomify.com/CVE-2019-12986/): Command injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-11550 and fix it if it is affected.

What it is: CVE-2019-11550 is a medium-severity vulnerability in n/a, published on 8 May 2019. 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-2019-11550 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-2019-11550/ (Markdown: https://insights.sbomify.com/CVE-2019-11550/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-11550
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-11550
- OSV: https://osv.dev/vulnerability/CVE-2019-11550

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-11550/
Summaries are generated and may contain mistakes; the official description above is the record.