# CVE-2000-0266: Security feature bypass in n/a

> Remote attackers can bypass cross-frame security policies in Internet Explorer via malicious applets, enabling arbitrary JavaScript execution.

- **Severity:** Low 2.6 (`AV:N/AC:H/Au:N/C:P/I:N/A:N`)
- **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:** 26 Apr 2000
- **Updated:** 8 Aug 2024
- **Also known as:** GHSA-4fm7-p9w2-qjwr

## What is CVE-2000-0266?

CVE-2000-0266 is a low-severity vulnerability in Microsoft Internet Explorer, published on 26 Apr 2000. 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

Internet Explorer 5.01 allows remote attackers to bypass the cross frame security policy via a malicious applet that interacts with the Java JSObject to modify the DOM properties to set the IFRAME to an arbitrary Javascript URL.

## Which versions are affected by CVE-2000-0266?

It affects 1 product.


Products: Microsoft Internet Explorer.

## How do I fix CVE-2000-0266?

No fix has been published for CVE-2000-0266 yet. Limit exposure of the affected software until one is available.

## Is CVE-2000-0266 being exploited?

There is no known exploitation of CVE-2000-0266 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Internet Explorer

- [CVE-2014-1776](https://insights.sbomify.com/CVE-2014-1776/): Microsoft Internet Explorer Memory Corruption (critical 9.8, exploited in the wild)
- [CVE-2021-27085](https://insights.sbomify.com/CVE-2021-27085/): Microsoft Internet Explorer Remote Code Execution (high 8.8, exploited in the wild)
- [CVE-2017-0222](https://insights.sbomify.com/CVE-2017-0222/): Microsoft Internet Explorer Remote Code Execution (high 8.8, exploited in the wild)
- [CVE-2017-0210](https://insights.sbomify.com/CVE-2017-0210/): Microsoft Internet Explorer Privilege Escalation (high 8.8, exploited in the wild)
- [CVE-2017-0149](https://insights.sbomify.com/CVE-2017-0149/): Microsoft Internet Explorer Memory Corruption (high 8.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2000-0266 and fix it if it is affected.

What it is: CVE-2000-0266 is a low-severity vulnerability in Microsoft Internet Explorer, published on 26 Apr 2000. 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-2000-0266 in the wild and no public exploit code.

Affected product: Microsoft Internet Explorer. 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-2000-0266/ (Markdown: https://insights.sbomify.com/CVE-2000-0266/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2000-0266
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2000-0266
- OSV: https://osv.dev/vulnerability/CVE-2000-0266

---
From sbomify Insights: https://insights.sbomify.com/CVE-2000-0266/
Summaries are generated and may contain mistakes; the official description above is the record.