# CVE-2018-8569: Code injection in Yammer Desktop App

> Attackers can execute arbitrary code remotely in the Yammer desktop application by exploiting a vulnerability in how it loads content.

- **Severity:** High 7.8 (`CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 23 Oct 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-662w-pvm7-3799

## What is CVE-2018-8569?

CVE-2018-8569 is a high-severity code injection vulnerability in Microsoft Yammer Desktop App, published on 23 Oct 2018. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

A remote code execution vulnerability exists in the Yammer desktop application due to the loading of arbitrary content, aka "Yammer Desktop Application Remote Code Execution Vulnerability." This affects Yammer Desktop App.

## Which versions are affected by CVE-2018-8569?

It affects 1 product.


Products: Microsoft Yammer.

## How do I fix CVE-2018-8569?

No fix has been published for CVE-2018-8569 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-8569 being exploited?

There is no known exploitation of CVE-2018-8569 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Yammer Desktop App

- [CVE-2019-1265](https://insights.sbomify.com/CVE-2019-1265/): Security feature bypass in Yammer for Android (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-8569 and fix it if it is affected.

What it is: CVE-2018-8569 is a high-severity code injection vulnerability in Microsoft Yammer Desktop App, published on 23 Oct 2018. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2018-8569 in the wild and no public exploit code.

Affected product: Microsoft Yammer Desktop App. 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-2018-8569/ (Markdown: https://insights.sbomify.com/CVE-2018-8569/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-8569
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-8569
- OSV: https://osv.dev/vulnerability/CVE-2018-8569

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-8569/
Summaries are generated and may contain mistakes; the official description above is the record.