# CVE-2006-3227: Security feature bypass in n/a

> Remote attackers can bypass content filters by exploiting browser interpretation conflicts with high-bit ASCII characters, requiring specific encodings.

- **Severity:** Low 2.6 (`AV:N/AC:H/Au:N/C:N/I:P/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 Jun 2006
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-4mpw-2952-v468

## What is CVE-2006-3227?

CVE-2006-3227 is a low-severity vulnerability in Microsoft Internet Explorer, published on 26 Jun 2006. 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

Interpretation conflict between Internet Explorer and other web browsers such as Mozilla, Opera, and Firefox might allow remote attackers to modify the visual presentation of web pages and possibly bypass protection mechanisms such as content filters via ASCII characters with the 8th bit set, which could be stripped by Internet Explorer to render legible text, but not when using other browsers. NOTE: there has been significant discussion about this issue, and as of 20060625, it is not clear where the responsibility for this issue lies, although it might be due to vagueness within the associated standards.  NOTE: this might only be exploitable with certain encodings.

## Which versions are affected by CVE-2006-3227?

It affects 1 product.


Products: Microsoft Internet Explorer.

## How do I fix CVE-2006-3227?

No fix has been published for CVE-2006-3227 yet. Limit exposure of the affected software until one is available.

## Is CVE-2006-3227 being exploited?

There is no known exploitation of CVE-2006-3227 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-2006-3227 and fix it if it is affected.

What it is: CVE-2006-3227 is a low-severity vulnerability in Microsoft Internet Explorer, published on 26 Jun 2006. 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-2006-3227 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-2006-3227/ (Markdown: https://insights.sbomify.com/CVE-2006-3227/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2006-3227
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2006-3227
- OSV: https://osv.dev/vulnerability/CVE-2006-3227

---
From sbomify Insights: https://insights.sbomify.com/CVE-2006-3227/
Summaries are generated and may contain mistakes; the official description above is the record.