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Fencer Vulns
medium 6.8

CVE-2006-6497 json

Multiple unspecified vulnerabilities in the layout engine for Mozilla Firefox 2.x before 2.0.0.1, 1.5.x before 1.5.0.9, Thunderbird before…

published 2006-12-20 19 y ago modified 2026-06-16 4 mo ago also EUVD-2006-6480

cvss
6.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.4%
EPSS 4.4% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

Multiple unspecified vulnerabilities in the layout engine for Mozilla Firefox 2.x before 2.0.0.1, 1.5.x before 1.5.0.9, Thunderbird before 1.5.0.9, and SeaMonkey before 1.0.7 allow remote attackers to cause a denial of service (memory corruption and crash) and possibly execute arbitrary code via unknown attack vectors.

Patch / fix

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

debian advisories DEBIAN-CVE-2006-6497

  • thunderbird RHEL 4 1.5.0.9-0.1.el4
  • seamonkey RHEL 2.1 1.0.7-0.1.el2
  • seamonkey RHEL 3 1.0.7-0.1.el3
  • seamonkey RHEL 4 1.0.7-0.1.el4
  • devhelp RHEL 4 0.10-0.6.el4
  • seamonkey-nss RHEL 2.1 1.0.7-0.1.el2
  • seamonkey-nss RHEL 3 1.0.7-0.1.el3
  • seamonkey-chat RHEL 2.1 1.0.7-0.1.el2

red hat advisories RHSA-2006:0760RHSA-2006:0759RHSA-2006:0758

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2006-6497 updated

security flaw

  • Red Hat Desktop version 3 seamonkey 1.0.7-0.1.el3, seamonkey-nss 1.0.7-0.1.el3, seamonkey-chat 1.0.7-0.1.el3, seamonkey-mail 1.0.7-0.1.el3, seamonkey-nspr 1.0.7-0.1.el3, seamonkey-js-debugger 1.0.7-0.1.el3, +1 more Red Hat Enterprise Linux AS (Advanced Server) version 2.1 seamonkey 1.0.7-0.1.el2, seamonkey-nss 1.0.7-0.1.el2, seamonkey-chat 1.0.7-0.1.el2, seamonkey-mail 1.0.7-0.1.el2, seamonkey-nspr 1.0.7-0.1.el2, seamonkey-js-debugger 1.0.7-0.1.el2, +1 more Red Hat Enterprise Linux AS version 3 seamonkey 1.0.7-0.1.el3, seamonkey-nss 1.0.7-0.1.el3, seamonkey-chat 1.0.7-0.1.el3, seamonkey-mail 1.0.7-0.1.el3, seamonkey-nspr 1.0.7-0.1.el3, seamonkey-js-debugger 1.0.7-0.1.el3, +1 more Red Hat Enterprise Linux AS version 4 devhelp 0.10-0.6.el4, firefox 1.5.0.9-0.1.el4, seamonkey 1.0.7-0.1.el4, thunderbird 1.5.0.9-0.1.el4, seamonkey-chat 1.0.7-0.1.el4, seamonkey-mail 1.0.7-0.1.el4, +2 more Red Hat Enterprise Linux Desktop version 4 devhelp 0.10-0.6.el4, firefox 1.5.0.9-0.1.el4, seamonkey 1.0.7-0.1.el4, thunderbird 1.5.0.9-0.1.el4, seamonkey-chat 1.0.7-0.1.el4, seamonkey-mail 1.0.7-0.1.el4, +2 more Red Hat Enterprise Linux ES version 2.1 seamonkey 1.0.7-0.1.el2, seamonkey-nss 1.0.7-0.1.el2, seamonkey-chat 1.0.7-0.1.el2, seamonkey-mail 1.0.7-0.1.el2, seamonkey-nspr 1.0.7-0.1.el2, seamonkey-js-debugger 1.0.7-0.1.el2, +1 more
    +6 more products
    Red Hat Enterprise Linux ES version 3 seamonkey 1.0.7-0.1.el3, seamonkey-nss 1.0.7-0.1.el3, seamonkey-chat 1.0.7-0.1.el3, seamonkey-mail 1.0.7-0.1.el3, seamonkey-nspr 1.0.7-0.1.el3, seamonkey-js-debugger 1.0.7-0.1.el3, +1 more Red Hat Enterprise Linux ES version 4 devhelp 0.10-0.6.el4, firefox 1.5.0.9-0.1.el4, seamonkey 1.0.7-0.1.el4, thunderbird 1.5.0.9-0.1.el4, seamonkey-chat 1.0.7-0.1.el4, seamonkey-mail 1.0.7-0.1.el4, +2 more Red Hat Enterprise Linux WS version 2.1 seamonkey 1.0.7-0.1.el2, seamonkey-nss 1.0.7-0.1.el2, seamonkey-chat 1.0.7-0.1.el2, seamonkey-mail 1.0.7-0.1.el2, seamonkey-nspr 1.0.7-0.1.el2, seamonkey-js-debugger 1.0.7-0.1.el2, +1 more Red Hat Enterprise Linux WS version 3 seamonkey 1.0.7-0.1.el3, seamonkey-nss 1.0.7-0.1.el3, seamonkey-chat 1.0.7-0.1.el3, seamonkey-mail 1.0.7-0.1.el3, seamonkey-nspr 1.0.7-0.1.el3, seamonkey-js-debugger 1.0.7-0.1.el3, +1 more Red Hat Enterprise Linux WS version 4 devhelp 0.10-0.6.el4, firefox 1.5.0.9-0.1.el4, seamonkey 1.0.7-0.1.el4, thunderbird 1.5.0.9-0.1.el4, seamonkey-chat 1.0.7-0.1.el4, seamonkey-mail 1.0.7-0.1.el4, +2 more Red Hat Linux Advanced Workstation 2.1 seamonkey 1.0.7-0.1.el2, seamonkey-nss 1.0.7-0.1.el2, seamonkey-chat 1.0.7-0.1.el2, seamonkey-mail 1.0.7-0.1.el2, seamonkey-nspr 1.0.7-0.1.el2, seamonkey-js-debugger 1.0.7-0.1.el2, +1 more
    fixed: vendor fix RHSA-2006:0759

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.44% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/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.