# CVE-2018-0841: Memory corruption in Microsoft Office

> Remote attackers can execute arbitrary code via memory handling flaws in Microsoft Office 2016 Click-to-Run.

- **Severity:** High 8.8 (`CVSS:3.0/AV:N/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:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 15 Feb 2018
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-rrp6-3c46-5336

## What is CVE-2018-0841?

CVE-2018-0841 is a high-severity memory corruption vulnerability in Microsoft Office, published on 15 Feb 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Microsoft Office 2016 Click-to-Run allows a remote code execution vulnerability due to how objects are handled in memory, aka "Office Remote Code Execution Vulnerability"

## Which versions are affected by CVE-2018-0841?

It affects 1 product.


Products: Microsoft Office.

## How do I fix CVE-2018-0841?

No fix has been published for CVE-2018-0841 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-0841 being exploited?

There is no known exploitation of CVE-2018-0841 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Office

- [CVE-2018-0798](https://insights.sbomify.com/CVE-2018-0798/): Microsoft Office Memory Corruption (high 8.8, exploited in the wild)
- [CVE-2015-1770](https://insights.sbomify.com/CVE-2015-1770/): Microsoft Office Uninitialized Memory Use (high 8.8, exploited in the wild)
- [CVE-2006-2492](https://insights.sbomify.com/CVE-2006-2492/): Microsoft Word Malformed Object Pointer (high 8.8, exploited in the wild)
- [CVE-2018-0802](https://insights.sbomify.com/CVE-2018-0802/): Microsoft Office Memory Corruption (high 7.8, exploited in the wild)
- [CVE-2017-11882](https://insights.sbomify.com/CVE-2017-11882/): Microsoft Office Memory Corruption (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-0841 and fix it if it is affected.

What it is: CVE-2018-0841 is a high-severity memory corruption vulnerability in Microsoft Office, published on 15 Feb 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2018-0841 in the wild and no public exploit code.

Affected product: Microsoft Office. 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-2018-0841/ (Markdown: https://insights.sbomify.com/CVE-2018-0841/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-0841
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-0841
- OSV: https://osv.dev/vulnerability/CVE-2018-0841

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-0841/
Summaries are generated and may contain mistakes; the official description above is the record.