# CVE-2018-0903: Memory corruption in Microsoft Access

> Remote code execution in Microsoft Access due to improper memory handling of objects, allowing attackers to execute arbitrary code.

- **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:** 14 Mar 2018
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-mjgr-cmwp-6j8c

## What is CVE-2018-0903?

CVE-2018-0903 is a high-severity memory corruption vulnerability in Microsoft Office, published on 14 Mar 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

Microsoft Access 2010 SP2, Microsoft Access 2013 SP1, Microsoft Access 2016, and Microsoft Office 2016 Click-to-Run allow a remote code execution vulnerability due to how objects are handled in memory, aka "Microsoft Access Remote Code Execution Vulnerability".

## Which versions are affected by CVE-2018-0903?

It affects 2 products.


Products: Microsoft Access, Microsoft Office.

## How do I fix CVE-2018-0903?

No fix has been published for CVE-2018-0903 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-0903 being exploited?

There is no known exploitation of CVE-2018-0903 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Office

- [CVE-2007-0671](https://insights.sbomify.com/CVE-2007-0671/): Microsoft Office Excel Remote Code Execution (high 8.8, exploited in the wild)
- [CVE-2000-0788](https://insights.sbomify.com/CVE-2000-0788/): Code injection in n/a (critical 10.0)
- [CVE-2015-2503](https://insights.sbomify.com/CVE-2015-2503/): Security feature bypass in n/a (critical 9.3)
- [CVE-2013-3155](https://insights.sbomify.com/CVE-2013-3155/): Memory corruption in n/a (critical 9.3)
- [CVE-2013-3156](https://insights.sbomify.com/CVE-2013-3156/): Memory corruption in n/a (critical 9.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-0903 and fix it if it is affected.

What it is: CVE-2018-0903 is a high-severity memory corruption vulnerability in Microsoft Office, published on 14 Mar 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-2018-0903 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-2018-0903/ (Markdown: https://insights.sbomify.com/CVE-2018-0903/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-0903
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-0903
- OSV: https://osv.dev/vulnerability/CVE-2018-0903

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-0903/
Summaries are generated and may contain mistakes; the official description above is the record.