# CVE-2009-1547: Memory corruption in n/a

> Remote attackers can execute arbitrary code via a crafted data stream header triggering memory corruption in Internet Explorer.

- **Severity:** High 8.8 (`CVSS:3.1/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:** 14 Oct 2009
- **Updated:** 21 Jan 2025
- **Also known as:** GHSA-rpp3-6c33-vw2f

## What is CVE-2009-1547?

CVE-2009-1547 is a high-severity memory corruption vulnerability in Microsoft Internet Explorer, published on 14 Oct 2009. 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

Unspecified vulnerability in Microsoft Internet Explorer 5.01 SP4, 6, 6 SP1, and 7 allows remote attackers to execute arbitrary code via a crafted data stream header that triggers memory corruption, aka "Data Stream Header Corruption Vulnerability."

Weakness: CWE-94 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2009-1547?

It affects 7 products.


Products: Microsoft Internet Explorer, Microsoft Windows 2000, Microsoft Windows 7, Microsoft Windows Server 2003, Microsoft Windows Server 2008, Microsoft Windows Vista, Microsoft Windows Xp.

## How do I fix CVE-2009-1547?

No fix has been published for CVE-2009-1547 yet. Limit exposure of the affected software until one is available.

## Is CVE-2009-1547 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-1547 exists.

Public exploit code:

- Microsoft Internet Explorer 5.0.1 - 'deflate' HTTP Content Encoding Remote Code Execution (exploitdb)
- Microsoft Internet Explorer 5/6/7 - Memory Corruption (MS09-054) (exploitdb)

## 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-2009-1547 and fix it if it is affected.

What it is: CVE-2009-1547 is a high-severity memory corruption vulnerability in Microsoft Internet Explorer, published on 14 Oct 2009. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2009-1547 exists.

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-2009-1547/ (Markdown: https://insights.sbomify.com/CVE-2009-1547/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2009-1547
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2009-1547
- OSV: https://osv.dev/vulnerability/CVE-2009-1547

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From sbomify Insights: https://insights.sbomify.com/CVE-2009-1547/
Summaries are generated and may contain mistakes; the official description above is the record.