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Fencer Vulns
medium 5.1

CVE-2006-1993 json

Mozilla Firefox 1.5.0.2, when designMode is enabled, allows remote attackers to cause a denial of service and possibly execute arbitrary co…

published 2006-04-25 20 y ago modified 2026-06-16 4 mo ago also EUVD-2006-1993

cvss
5.1
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
54.0%
EPSS 54.0% chance of exploitation in 30 days, percentile 99%
public exploits
1
Exploit-DB

Summary

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.

Patch / fix

Timeline

  1. First public exploit (EDB-1716)
  2. Published

Exploit prediction

54.00% chance of exploitation in the next 30 days, higher than 99% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-1716 Mozilla Firefox 1.5.0.2 - 'js320.dll/xpcom_core.dll' Denial of Service (PoC) dos, 2006-04-24
  • securityfocus.com http://www.securityfocus.com/bid/17671 referenced PoC, tagged "exploit" by a source, unverified
  • securident.com http://www.securident.com/vuln/ff.txt referenced PoC, tagged "exploit" by a source, unverified
  • securitytracker.com http://securitytracker.com/id?1015981 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.1 AV:N/AC:H/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-399 Resource Management Errors

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.