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Fencer Vulns
medium 5.0

CVE-2006-5633 json

Firefox 1.5.0.7 and 2.0, and Seamonkey 1.1b, allows remote attackers to cause a denial of service (crash) by creating a range object using…

published 2006-10-31 20 y ago modified 2026-06-16 4 mo ago also EUVD-2006-5618

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
7.5%
EPSS 7.5% chance of exploitation in 30 days, percentile 94%
public exploits
1
Exploit-DB

Summary

Firefox 1.5.0.7 and 2.0, and Seamonkey 1.1b, allows remote attackers to cause a denial of service (crash) by creating a range object using createRange, calling selectNode on a DocType node (DOCUMENT_TYPE_NODE), then calling createContextualFragment on the range, which triggers a null dereference. NOTE: the original Bugtraq post mentioned that code execution was possible, but followup analysis has shown that it is only a null dereference.

Patch / fix

  • firefox-esr Debian 14, Debian 13, Debian 12 45.0esr-1

debian advisories DEBIAN-CVE-2006-5633

Timeline

  1. First public exploit (EDB-2695)
  2. Published

Exploit prediction

7.47% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-2695 Mozilla Firefox 1.5.0.7/2.0 - 'createRange' Remote Denial of Service dos, 2006-10-31
  • securityfocus.com http://www.securityfocus.com/archive/1/450168/100/0/threaded referenced PoC, tagged "exploit" by a source, unverified
  • lists.grok.org.uk http://lists.grok.org.uk/pipermail/full-disclosure/2006-October/050416.html referenced PoC, tagged "exploit" by a source, unverified
  • bugzilla.mozilla.org https://bugzilla.mozilla.org/show_bug.cgi?id=358797 referenced PoC, tagged "exploit" by a source, unverified
  • gotfault.net http://www.gotfault.net/research/advisory/gadv-firefox.txt referenced PoC, tagged "exploit" by a source, unverified
  • bugzilla.redhat.com https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=213237 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

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.