# CVE-2020-8190: Privilege escalation in Citrix ADC, Citrix Gateway

> Incorrect file permissions in Citrix ADC and Gateway allow attackers to escalate privileges on the affected network appliances.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **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:** 10 Jul 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-85c5-xq3r-f3vw

## What is CVE-2020-8190?

CVE-2020-8190 is a high-severity vulnerability in Citrix ADC, Citrix Gateway, published on 10 Jul 2020. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Incorrect file permissions in Citrix ADC and Citrix Gateway before versions 13.0-58.30, 12.1-57.18, 12.0-63.21, 11.1-64.14 and 10.5-70.18 allows privilege escalation.

Weakness: CWE-281 (Improper Preservation of Permissions)

## Which versions are affected by CVE-2020-8190?

It affects 3 products.


Products: Citrix Application Delivery Controller Firmware, Citrix Gateway Firmware, Citrix Netscaler Gateway Firmware.

## How do I fix CVE-2020-8190?

No fix has been published for CVE-2020-8190 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-8190 being exploited?

There is no known exploitation of CVE-2020-8190 in the wild and no public exploit code.

## Other vulnerabilities in Citrix ADC, Citrix Gateway

- [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-2020-8190 and fix it if it is affected.

What it is: CVE-2020-8190 is a high-severity vulnerability in Citrix ADC, Citrix Gateway, published on 10 Jul 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-8190 in the wild and no public exploit code.

Affected product: Citrix ADC, Citrix Gateway. 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-2020-8190/ (Markdown: https://insights.sbomify.com/CVE-2020-8190/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-8190
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-8190
- OSV: https://osv.dev/vulnerability/CVE-2020-8190

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-8190/
Summaries are generated and may contain mistakes; the official description above is the record.