# CVE-2021-22907: Privilege escalation in Citrix Workspace App for Windows

> An improper access control flaw in Citrix Workspace App for Windows allows attackers to escalate privileges on the local system.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/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:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 27 May 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-j68c-rj4v-fjjr

## What is CVE-2021-22907?

CVE-2021-22907 is a high-severity vulnerability in Citrix Workspace App for Windows, published on 27 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An improper access control vulnerability exists in Citrix Workspace App for Windows potentially allows privilege escalation in CR versions prior to 2105 and 1912 LTSR prior to CU4.

Weakness: CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2021-22907?

It affects 1 product.


Products: Citrix Workspace.

## How do I fix CVE-2021-22907?

No fix has been published for CVE-2021-22907 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-22907 being exploited?

There is no known exploitation of CVE-2021-22907 in the wild and no public exploit code.

## Other vulnerabilities in Citrix Workspace App for Windows

- [CVE-2020-8207](https://insights.sbomify.com/CVE-2020-8207/): Privilege escalation in Citrix Workspace App for Windows (high 8.8)
- [CVE-2024-6286](https://insights.sbomify.com/CVE-2024-6286/): Local Privilege escalation allows a low-privileged user to gain SYSTEM privileges (high 8.5)
- [CVE-2023-24485](https://insights.sbomify.com/CVE-2023-24485/): Privilege Escalation on the system running a vulnerable version of Citrix Workspace app for Windows (high 7.8)
- [CVE-2022-21825](https://insights.sbomify.com/CVE-2022-21825/): Privilege escalation in Citrix Workspace App for Linux (high 7.8)
- [CVE-2025-4879](https://insights.sbomify.com/CVE-2025-4879/): Citrix Workspace App for Windows - Local Privilege escalation allows a low-privileged user to gain SYSTEM privileges (high 7.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-22907 and fix it if it is affected.

What it is: CVE-2021-22907 is a high-severity vulnerability in Citrix Workspace App for Windows, published on 27 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-22907 in the wild and no public exploit code.

Affected product: Citrix Workspace App for Windows. 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-2021-22907/ (Markdown: https://insights.sbomify.com/CVE-2021-22907/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-22907
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-22907
- OSV: https://osv.dev/vulnerability/CVE-2021-22907

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-22907/
Summaries are generated and may contain mistakes; the official description above is the record.