# CVE-2001-0340: Cross-site scripting in n/a

> Attackers can execute malicious scripts in user mailboxes via HTML attachments in Outlook Web Access, potentially leading to account takeover.

- **Severity:** High 7.5 (`AV:N/AC:L/Au:N/C:P/I:P/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 18 Sep 2001
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-mcfj-5726-cfww

## What is CVE-2001-0340?

CVE-2001-0340 is a high-severity cross-site scripting vulnerability in Microsoft Exchange Server, published on 18 Sep 2001. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

An interaction between the Outlook Web Access (OWA) service in Microsoft Exchange 2000 Server and Internet Explorer allows attackers to execute malicious script code against a user's mailbox via a message attachment that contains HTML code, which is executed automatically.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type)

## Which versions are affected by CVE-2001-0340?

It affects 1 product.


Products: Microsoft Exchange Server.

## How do I fix CVE-2001-0340?

No fix has been published for CVE-2001-0340 yet. Limit exposure of the affected software until one is available.

## Is CVE-2001-0340 being exploited?

There is no known exploitation of CVE-2001-0340 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Exchange Server

- [CVE-2024-21410](https://insights.sbomify.com/CVE-2024-21410/): Microsoft Exchange Server Privilege Escalation (critical 9.8, exploited in the wild)
- [CVE-2021-34473](https://insights.sbomify.com/CVE-2021-34473/): Microsoft Exchange Server Remote Code Execution (critical 9.1, exploited in the wild)
- [CVE-2021-26855](https://insights.sbomify.com/CVE-2021-26855/): Microsoft Exchange Server Remote Code Execution (critical 9.1, exploited in the wild)
- [CVE-2021-34523](https://insights.sbomify.com/CVE-2021-34523/): Microsoft Exchange Server Privilege Escalation (critical 9.0, exploited in the wild)
- [CVE-2023-21529](https://insights.sbomify.com/CVE-2023-21529/): Microsoft Exchange Server Deserialization of Untrusted Data (high 8.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2001-0340 and fix it if it is affected.

What it is: CVE-2001-0340 is a high-severity cross-site scripting vulnerability in Microsoft Exchange Server, published on 18 Sep 2001. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2001-0340 in the wild and no public exploit code.

Affected product: Microsoft Exchange Server. 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-2001-0340/ (Markdown: https://insights.sbomify.com/CVE-2001-0340/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2001-0340
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2001-0340
- OSV: https://osv.dev/vulnerability/CVE-2001-0340

---
From sbomify Insights: https://insights.sbomify.com/CVE-2001-0340/
Summaries are generated and may contain mistakes; the official description above is the record.