---
title: "CVE-2006-1993: Mozilla Firefox 1.5.0.2, when designMode… | CubePath"
description: "Mozilla Firefox 1.5.0.2, when designMode is enabled, allows remote attackers to cause a denial of service and possibly execute arbitrary code via certain…"
language: en
source: https://cubepath.com/security/cve/CVE-2006-1993
---

# CVE-2006-1993: Mozilla Firefox 1.5.0.2, when designMode… | CubePath

## Description

Mozilla Firefox 1.5.0.2, when designMode is enabled, allows remote attackers to cause a denial of service and possibly execute arbitrary code via certain Javascript that is not properly handled by the contentWindow.focus method in an iframe, which causes a reference to a deleted controller context object. NOTE: this was originally claimed to be a buffer overflow in (1) js320.dll and (2) xpcom\_core.dll, but the vendor disputes this claim.

Official description from the CVE record, published by redhat. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2006-1993)

## Key data

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.54003 (54.0% probability)

Percentile

99.0%

Scores of

Nov 10, 2026

Model

v2026.06.15

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [20214](http://secunia.com/advisories/20214)  (secunia.com) third-party-advisory
- [19802](http://secunia.com/advisories/19802)  (secunia.com) third-party-advisory
- [ADV-2006-3748](http://www.vupen.com/english/advisories/2006/3748)  (vupen.com) vdb-entry
- [oval:org.mitre.oval:def:1790](https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1790)  (oval.cisecurity.org) vdb-entry signature
- [SSRT061145](http://www.securityfocus.com/archive/1/434524/100/0/threaded)  (securityfocus.com) vendor-advisory
- [20019](http://secunia.com/advisories/20019)  (secunia.com) third-party-advisory
- [securident.com/vuln/ff.txt](http://www.securident.com/vuln/ff.txt)
- [17671](http://www.securityfocus.com/bid/17671)  (securityfocus.com) vdb-entry
- [GLSA-200605-06](http://www.gentoo.org/security/en/glsa/glsa-200605-06.xml)  (gentoo.org) vendor-advisory
- [firefox-iframe-contentwindowfocus-bo(25994)](https://exchange.xforce.ibmcloud.com/vulnerabilities/25994)  (exchange.xforce.ibmcloud.com) vdb-entry
- [ADV-2006-1922](http://www.vupen.com/english/advisories/2006/1922)  (vupen.com) vdb-entry
- [DSA-1055](http://www.debian.org/security/2006/dsa-1055)  (debian.org) vendor-advisory
- [VU#866300](http://www.kb.cert.org/vuls/id/866300)  (kb.cert.org) third-party-advisory
- [20015](http://secunia.com/advisories/20015)  (secunia.com) third-party-advisory
- [1015981](http://securitytracker.com/id?1015981)  (securitytracker.com) vdb-entry
- [ADV-2008-0083](http://www.vupen.com/english/advisories/2008/0083)  (vupen.com) vdb-entry
- [ADV-2006-1614](http://www.vupen.com/english/advisories/2006/1614)  (vupen.com) vdb-entry
- [SSRT061181](http://www.securityfocus.com/archive/1/446658/100/200/threaded)  (securityfocus.com) vendor-advisory
- [20060424 Firefox Remote Code Execution and DoS 1.5.0.2](http://www.securityfocus.com/archive/1/431878/100/0/threaded)  (securityfocus.com) mailing-list
- [mozilla.org/security/announce/2006/mfsa2006-30.html](http://www.mozilla.org/security/announce/2006/mfsa2006-30.html)
- [22066](http://secunia.com/advisories/22066)  (secunia.com) third-party-advisory
- [20070](http://secunia.com/advisories/20070)  (secunia.com) third-party-advisory
- [DSA-1053](http://www.debian.org/security/2006/dsa-1053)  (debian.org) vendor-advisory
- [780](http://securityreason.com/securityalert/780)  (securityreason.com) third-party-advisory

## Timeline

1. ID reserved Apr 25, 2006
2. Record published Apr 25, 2006
3. Record last updated Aug 7, 2024

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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:01 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)