# CVE-2024-35164: Apache Guacamole: Improper input validation of console codes

> A malicious user with access to a text-based connection can execute arbitrary code on the server via crafted console codes in Apache Guacamole.

- **Severity:** Medium 6.8 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/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:** 2 Jul 2025
- **Updated:** 26 Feb 2026
- **Also known as:** GHSA-8wh3-jcvc-qrmq, UBUNTU-CVE-2024-35164

## What is CVE-2024-35164?

CVE-2024-35164 is a medium-severity code injection vulnerability in Apache Guacamole, published on 2 Jul 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The terminal emulator of Apache Guacamole 1.5.5 and older does not properly validate console codes received from servers via text-based protocols like SSH. If a malicious user has access to a text-based connection, a specially-crafted sequence of console codes could allow arbitrary code to be executed
with the privileges of the running guacd process.

Users are recommended to upgrade to version 1.6.0, which fixes this issue.

Weakness: CWE-129 (Improper Validation of Array Index)

## Which versions are affected by CVE-2024-35164?

It affects 1 product.


Products: Apache Guacamole.

## How do I fix CVE-2024-35164?

No fix has been published for CVE-2024-35164 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-35164 being exploited?

There is no known exploitation of CVE-2024-35164 in the wild and no public exploit code.

## Other vulnerabilities in Apache Guacamole

- [CVE-2021-43999](https://insights.sbomify.com/CVE-2021-43999/): Improper validation of SAML responses (high 8.8)
- [CVE-2017-3158](https://insights.sbomify.com/CVE-2017-3158/): Apache Guacamole Race Condition vulnerability (high 8.1)
- [CVE-2023-43826](https://insights.sbomify.com/CVE-2023-43826/): Apache Guacamole: Integer overflow in handling of VNC image buffers (high 7.5)
- [CVE-2019-19603](https://insights.sbomify.com/CVE-2019-19603/): Null dereference in n/a (high 7.5)
- [CVE-2018-1340](https://insights.sbomify.com/CVE-2018-1340/): Missing Encryption of Sensitive Data in Apache Guacamole (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-35164 and fix it if it is affected.

What it is: CVE-2024-35164 is a medium-severity code injection vulnerability in Apache Guacamole, published on 2 Jul 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-35164 in the wild and no public exploit code.

Affected product: Apache Guacamole. 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-2024-35164/ (Markdown: https://insights.sbomify.com/CVE-2024-35164/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-35164
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-35164
- OSV: https://osv.dev/vulnerability/CVE-2024-35164

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-35164/
Summaries are generated and may contain mistakes; the official description above is the record.